521321980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{3581}}^1$

素因数の和:3870

約数の個数: 48

約数和(自身を含む): 1137356640

約数和(自身を除く): 616034660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 251, 290, 502, 580, 1004, 1255, 2510, 3581, 5020, 7162, 7279, 14324, 14558, 17905, 29116, 35810, 36395, 71620, 72790, 103849, 145580, 207698, 415396, 519245, 898831, 1038490, 1797662, 2076980, 3595324, 4494155, 8988310, 17976620, 26066099, 52132198, 104264396, 130330495, 260660990, 521321980]

約数ペア:

[(1, 521321980), (2, 260660990), (4, 130330495), (5, 104264396), (10, 52132198), (20, 26066099), (29, 17976620), (58, 8988310), (116, 4494155), (145, 3595324), (251, 2076980), (290, 1797662), (502, 1038490), (580, 898831), (1004, 519245), (1255, 415396), (2510, 207698), (3581, 145580), (5020, 103849), (7162, 72790), (7279, 71620), (14324, 36395), (14558, 35810), (17905, 29116)]