21131255680

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{373}}^1$

素因数の和:577

約数の個数: 256

約数和(自身を含む): 55372584960

約数和(自身を除く): 34241329280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 41, 64, 68, 80, 82, 85, 127, 128, 136, 160, 164, 170, 205, 254, 272, 320, 328, 340, 373, 410, 508, 544, 635, 640, 656, 680, 697, 746, 820, 1016, 1088, 1270, 1312, 1360, 1394, 1492, 1640, 1865, 2032, 2159, 2176, 2540, 2624, 2720, 2788, 2984, 3280, 3485, 3730, 4064, 4318, 5080, 5207, 5248, 5440, 5576, 5968, 6341, 6560, 6970, 7460, 8128, 8636, 10160, 10414, 10795, 10880, 11152, 11936, 12682, 13120, 13940, 14920, 15293, 16256, 17272, 20320, 20828, 21590, 22304, 23872, 25364, 26035, 26240, 27880, 29840, 30586, 31705, 34544, 40640, 41656, 43180, 44608, 47371, 47744, 50728, 52070, 55760, 59680, 61172, 63410, 69088, 76465, 81280, 83312, 86360, 88519, 89216, 94742, 101456, 104140, 111520, 119360, 122344, 126820, 138176, 152930, 166624, 172720, 177038, 189484, 202912, 208280, 223040, 236855, 238720, 244688, 253640, 259981, 276352, 305860, 333248, 345440, 354076, 378968, 405824, 416560, 442595, 446080, 473710, 489376, 507280, 519962, 611720, 666496, 690880, 708152, 757936, 805307, 811648, 833120, 885190, 947420, 978752, 1014560, 1039924, 1223440, 1299905, 1381760, 1416304, 1515872, 1610614, 1666240, 1770380, 1894840, 1942211, 1957504, 2029120, 2079848, 2446880, 2599810, 2832608, 3031744, 3221228, 3332480, 3540760, 3789680, 3884422, 4026535, 4058240, 4159696, 4893760, 5199620, 5665216, 6063488, 6442456, 7081520, 7579360, 7768844, 8053070, 8319392, 9711055, 9787520, 10399240, 11330432, 12884912, 14163040, 15158720, 15537688, 16106140, 16638784, 19422110, 20798480, 25769824, 28326080, 30317440, 31075376, 32212280, 33017587, 33277568, 38844220, 41596960, 51539648, 56652160, 62150752, 64424560, 66035174, 77688440, 83193920, 103079296, 124301504, 128849120, 132070348, 155376880, 165087935, 166387840, 248603008, 257698240, 264140696, 310753760, 330175870, 515396480, 528281392, 621507520, 660351740, 1056562784, 1243015040, 1320703480, 2113125568, 2641406960, 4226251136, 5282813920, 10565627840, 21131255680]

約数ペア:

[(1, 21131255680), (2, 10565627840), (4, 5282813920), (5, 4226251136), (8, 2641406960), (10, 2113125568), (16, 1320703480), (17, 1243015040), (20, 1056562784), (32, 660351740), (34, 621507520), (40, 528281392), (41, 515396480), (64, 330175870), (68, 310753760), (80, 264140696), (82, 257698240), (85, 248603008), (127, 166387840), (128, 165087935), (136, 155376880), (160, 132070348), (164, 128849120), (170, 124301504), (205, 103079296), (254, 83193920), (272, 77688440), (320, 66035174), (328, 64424560), (340, 62150752), (373, 56652160), (410, 51539648), (508, 41596960), (544, 38844220), (635, 33277568), (640, 33017587), (656, 32212280), (680, 31075376), (697, 30317440), (746, 28326080), (820, 25769824), (1016, 20798480), (1088, 19422110), (1270, 16638784), (1312, 16106140), (1360, 15537688), (1394, 15158720), (1492, 14163040), (1640, 12884912), (1865, 11330432), (2032, 10399240), (2159, 9787520), (2176, 9711055), (2540, 8319392), (2624, 8053070), (2720, 7768844), (2788, 7579360), (2984, 7081520), (3280, 6442456), (3485, 6063488), (3730, 5665216), (4064, 5199620), (4318, 4893760), (5080, 4159696), (5207, 4058240), (5248, 4026535), (5440, 3884422), (5576, 3789680), (5968, 3540760), (6341, 3332480), (6560, 3221228), (6970, 3031744), (7460, 2832608), (8128, 2599810), (8636, 2446880), (10160, 2079848), (10414, 2029120), (10795, 1957504), (10880, 1942211), (11152, 1894840), (11936, 1770380), (12682, 1666240), (13120, 1610614), (13940, 1515872), (14920, 1416304), (15293, 1381760), (16256, 1299905), (17272, 1223440), (20320, 1039924), (20828, 1014560), (21590, 978752), (22304, 947420), (23872, 885190), (25364, 833120), (26035, 811648), (26240, 805307), (27880, 757936), (29840, 708152), (30586, 690880), (31705, 666496), (34544, 611720), (40640, 519962), (41656, 507280), (43180, 489376), (44608, 473710), (47371, 446080), (47744, 442595), (50728, 416560), (52070, 405824), (55760, 378968), (59680, 354076), (61172, 345440), (63410, 333248), (69088, 305860), (76465, 276352), (81280, 259981), (83312, 253640), (86360, 244688), (88519, 238720), (89216, 236855), (94742, 223040), (101456, 208280), (104140, 202912), (111520, 189484), (119360, 177038), (122344, 172720), (126820, 166624), (138176, 152930)]