640914160

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{2129}}^1$

素因数の和:2266

約数の個数: 80

約数和(自身を含む): 1540347840

約数和(自身を除く): 899433680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 71, 80, 106, 142, 212, 265, 284, 355, 424, 530, 568, 710, 848, 1060, 1136, 1420, 2120, 2129, 2840, 3763, 4240, 4258, 5680, 7526, 8516, 10645, 15052, 17032, 18815, 21290, 30104, 34064, 37630, 42580, 60208, 75260, 85160, 112837, 150520, 151159, 170320, 225674, 301040, 302318, 451348, 564185, 604636, 755795, 902696, 1128370, 1209272, 1511590, 1805392, 2256740, 2418544, 3023180, 4513480, 6046360, 8011427, 9026960, 12092720, 16022854, 32045708, 40057135, 64091416, 80114270, 128182832, 160228540, 320457080, 640914160]

約数ペア:

[(1, 640914160), (2, 320457080), (4, 160228540), (5, 128182832), (8, 80114270), (10, 64091416), (16, 40057135), (20, 32045708), (40, 16022854), (53, 12092720), (71, 9026960), (80, 8011427), (106, 6046360), (142, 4513480), (212, 3023180), (265, 2418544), (284, 2256740), (355, 1805392), (424, 1511590), (530, 1209272), (568, 1128370), (710, 902696), (848, 755795), (1060, 604636), (1136, 564185), (1420, 451348), (2120, 302318), (2129, 301040), (2840, 225674), (3763, 170320), (4240, 151159), (4258, 150520), (5680, 112837), (7526, 85160), (8516, 75260), (10645, 60208), (15052, 42580), (17032, 37630), (18815, 34064), (21290, 30104)]