21434280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 256

約数和(自身を含む): 82944000

約数和(自身を除く): 61509720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 19, 20, 21, 24, 28, 30, 34, 35, 38, 40, 42, 51, 56, 57, 60, 68, 70, 76, 79, 84, 85, 95, 102, 105, 114, 119, 120, 133, 136, 140, 152, 158, 168, 170, 190, 204, 210, 228, 237, 238, 255, 266, 280, 285, 316, 323, 340, 357, 380, 395, 399, 408, 420, 456, 474, 476, 510, 532, 553, 570, 595, 632, 646, 665, 680, 714, 760, 790, 798, 840, 948, 952, 969, 1020, 1064, 1106, 1140, 1185, 1190, 1292, 1330, 1343, 1428, 1501, 1580, 1596, 1615, 1659, 1785, 1896, 1938, 1995, 2040, 2212, 2261, 2280, 2370, 2380, 2584, 2660, 2686, 2765, 2856, 3002, 3160, 3192, 3230, 3318, 3570, 3876, 3990, 4029, 4424, 4503, 4522, 4740, 4760, 4845, 5320, 5372, 5530, 6004, 6460, 6636, 6715, 6783, 7140, 7505, 7752, 7980, 8058, 8295, 9006, 9044, 9401, 9480, 9690, 10507, 10744, 11060, 11305, 12008, 12920, 13272, 13430, 13566, 14280, 15010, 15960, 16116, 16590, 18012, 18088, 18802, 19380, 20145, 21014, 22120, 22515, 22610, 25517, 26860, 27132, 28203, 30020, 31521, 32232, 33180, 33915, 36024, 37604, 38760, 40290, 42028, 45030, 45220, 47005, 51034, 52535, 53720, 54264, 56406, 60040, 63042, 66360, 67830, 75208, 76551, 80580, 84056, 90060, 90440, 94010, 102068, 105070, 112812, 126084, 127585, 135660, 141015, 153102, 157605, 161160, 178619, 180120, 188020, 204136, 210140, 225624, 252168, 255170, 271320, 282030, 306204, 315210, 357238, 376040, 382755, 420280, 510340, 535857, 564060, 612408, 630420, 714476, 765510, 893095, 1020680, 1071714, 1128120, 1260840, 1428952, 1531020, 1786190, 2143428, 2679285, 3062040, 3572380, 4286856, 5358570, 7144760, 10717140, 21434280]

約数ペア:

[(1, 21434280), (2, 10717140), (3, 7144760), (4, 5358570), (5, 4286856), (6, 3572380), (7, 3062040), (8, 2679285), (10, 2143428), (12, 1786190), (14, 1531020), (15, 1428952), (17, 1260840), (19, 1128120), (20, 1071714), (21, 1020680), (24, 893095), (28, 765510), (30, 714476), (34, 630420), (35, 612408), (38, 564060), (40, 535857), (42, 510340), (51, 420280), (56, 382755), (57, 376040), (60, 357238), (68, 315210), (70, 306204), (76, 282030), (79, 271320), (84, 255170), (85, 252168), (95, 225624), (102, 210140), (105, 204136), (114, 188020), (119, 180120), (120, 178619), (133, 161160), (136, 157605), (140, 153102), (152, 141015), (158, 135660), (168, 127585), (170, 126084), (190, 112812), (204, 105070), (210, 102068), (228, 94010), (237, 90440), (238, 90060), (255, 84056), (266, 80580), (280, 76551), (285, 75208), (316, 67830), (323, 66360), (340, 63042), (357, 60040), (380, 56406), (395, 54264), (399, 53720), (408, 52535), (420, 51034), (456, 47005), (474, 45220), (476, 45030), (510, 42028), (532, 40290), (553, 38760), (570, 37604), (595, 36024), (632, 33915), (646, 33180), (665, 32232), (680, 31521), (714, 30020), (760, 28203), (790, 27132), (798, 26860), (840, 25517), (948, 22610), (952, 22515), (969, 22120), (1020, 21014), (1064, 20145), (1106, 19380), (1140, 18802), (1185, 18088), (1190, 18012), (1292, 16590), (1330, 16116), (1343, 15960), (1428, 15010), (1501, 14280), (1580, 13566), (1596, 13430), (1615, 13272), (1659, 12920), (1785, 12008), (1896, 11305), (1938, 11060), (1995, 10744), (2040, 10507), (2212, 9690), (2261, 9480), (2280, 9401), (2370, 9044), (2380, 9006), (2584, 8295), (2660, 8058), (2686, 7980), (2765, 7752), (2856, 7505), (3002, 7140), (3160, 6783), (3192, 6715), (3230, 6636), (3318, 6460), (3570, 6004), (3876, 5530), (3990, 5372), (4029, 5320), (4424, 4845), (4503, 4760), (4522, 4740)]