256130640

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^2$

素因数の和:199

約数の個数: 240

約数和(自身を含む): 940564800

約数和(自身を除く): 684434160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 79, 80, 90, 95, 108, 114, 120, 135, 144, 152, 158, 171, 180, 190, 216, 228, 237, 240, 270, 285, 304, 316, 342, 360, 380, 395, 432, 456, 474, 513, 540, 570, 632, 684, 711, 720, 760, 790, 855, 912, 948, 1026, 1080, 1140, 1185, 1264, 1368, 1422, 1501, 1520, 1580, 1710, 1896, 2052, 2133, 2160, 2280, 2370, 2565, 2736, 2844, 3002, 3160, 3420, 3555, 3792, 4104, 4266, 4503, 4560, 4740, 5130, 5688, 6004, 6241, 6320, 6840, 7110, 7505, 8208, 8532, 9006, 9480, 10260, 10665, 11376, 12008, 12482, 13509, 13680, 14220, 15010, 17064, 18012, 18723, 18960, 20520, 21330, 22515, 24016, 24964, 27018, 28440, 30020, 31205, 34128, 36024, 37446, 40527, 41040, 42660, 45030, 49928, 54036, 56169, 56880, 60040, 62410, 67545, 72048, 74892, 81054, 85320, 90060, 93615, 99856, 108072, 112338, 118579, 120080, 124820, 135090, 149784, 162108, 168507, 170640, 180120, 187230, 202635, 216144, 224676, 237158, 249640, 270180, 280845, 299568, 324216, 337014, 355737, 360240, 374460, 405270, 449352, 474316, 499280, 540360, 561690, 592895, 648432, 674028, 711474, 748920, 810540, 842535, 898704, 948632, 1067211, 1080720, 1123380, 1185790, 1348056, 1422948, 1497840, 1621080, 1685070, 1778685, 1897264, 2134422, 2246760, 2371580, 2696112, 2845896, 3201633, 3242160, 3370140, 3557370, 4268844, 4493520, 4743160, 5336055, 5691792, 6403266, 6740280, 7114740, 8537688, 9486320, 10672110, 12806532, 13480560, 14229480, 16008165, 17075376, 21344220, 25613064, 28458960, 32016330, 42688440, 51226128, 64032660, 85376880, 128065320, 256130640]

約数ペア:

[(1, 256130640), (2, 128065320), (3, 85376880), (4, 64032660), (5, 51226128), (6, 42688440), (8, 32016330), (9, 28458960), (10, 25613064), (12, 21344220), (15, 17075376), (16, 16008165), (18, 14229480), (19, 13480560), (20, 12806532), (24, 10672110), (27, 9486320), (30, 8537688), (36, 7114740), (38, 6740280), (40, 6403266), (45, 5691792), (48, 5336055), (54, 4743160), (57, 4493520), (60, 4268844), (72, 3557370), (76, 3370140), (79, 3242160), (80, 3201633), (90, 2845896), (95, 2696112), (108, 2371580), (114, 2246760), (120, 2134422), (135, 1897264), (144, 1778685), (152, 1685070), (158, 1621080), (171, 1497840), (180, 1422948), (190, 1348056), (216, 1185790), (228, 1123380), (237, 1080720), (240, 1067211), (270, 948632), (285, 898704), (304, 842535), (316, 810540), (342, 748920), (360, 711474), (380, 674028), (395, 648432), (432, 592895), (456, 561690), (474, 540360), (513, 499280), (540, 474316), (570, 449352), (632, 405270), (684, 374460), (711, 360240), (720, 355737), (760, 337014), (790, 324216), (855, 299568), (912, 280845), (948, 270180), (1026, 249640), (1080, 237158), (1140, 224676), (1185, 216144), (1264, 202635), (1368, 187230), (1422, 180120), (1501, 170640), (1520, 168507), (1580, 162108), (1710, 149784), (1896, 135090), (2052, 124820), (2133, 120080), (2160, 118579), (2280, 112338), (2370, 108072), (2565, 99856), (2736, 93615), (2844, 90060), (3002, 85320), (3160, 81054), (3420, 74892), (3555, 72048), (3792, 67545), (4104, 62410), (4266, 60040), (4503, 56880), (4560, 56169), (4740, 54036), (5130, 49928), (5688, 45030), (6004, 42660), (6241, 41040), (6320, 40527), (6840, 37446), (7110, 36024), (7505, 34128), (8208, 31205), (8532, 30020), (9006, 28440), (9480, 27018), (10260, 24964), (10665, 24016), (11376, 22515), (12008, 21330), (12482, 20520), (13509, 18960), (13680, 18723), (14220, 18012), (15010, 17064)]