81297580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2351}}^1$

素因数の和:2399

約数の個数: 96

約数和(自身を含む): 221276160

約数和(自身を除く): 139978580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 494, 532, 665, 910, 988, 1235, 1330, 1729, 1820, 2351, 2470, 2660, 3458, 4702, 4940, 6916, 8645, 9404, 11755, 16457, 17290, 23510, 30563, 32914, 34580, 44669, 47020, 61126, 65828, 82285, 89338, 122252, 152815, 164570, 178676, 213941, 223345, 305630, 312683, 329140, 427882, 446690, 580697, 611260, 625366, 855764, 893380, 1069705, 1161394, 1250732, 1563415, 2139410, 2322788, 2903485, 3126830, 4064879, 4278820, 5806970, 6253660, 8129758, 11613940, 16259516, 20324395, 40648790, 81297580]

約数ペア:

[(1, 81297580), (2, 40648790), (4, 20324395), (5, 16259516), (7, 11613940), (10, 8129758), (13, 6253660), (14, 5806970), (19, 4278820), (20, 4064879), (26, 3126830), (28, 2903485), (35, 2322788), (38, 2139410), (52, 1563415), (65, 1250732), (70, 1161394), (76, 1069705), (91, 893380), (95, 855764), (130, 625366), (133, 611260), (140, 580697), (182, 446690), (190, 427882), (247, 329140), (260, 312683), (266, 305630), (364, 223345), (380, 213941), (455, 178676), (494, 164570), (532, 152815), (665, 122252), (910, 89338), (988, 82285), (1235, 65828), (1330, 61126), (1729, 47020), (1820, 44669), (2351, 34580), (2470, 32914), (2660, 30563), (3458, 23510), (4702, 17290), (4940, 16457), (6916, 11755), (8645, 9404)]