21546395

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 31358208

約数和(自身を除く): 9811813

約数列:

[1, 5, 13, 17, 31, 37, 65, 85, 155, 185, 221, 289, 403, 481, 527, 629, 1105, 1147, 1445, 2015, 2405, 2635, 3145, 3757, 5735, 6851, 8177, 8959, 10693, 14911, 18785, 19499, 34255, 40885, 44795, 53465, 74555, 97495, 116467, 139009, 253487, 331483, 582335, 695045, 1267435, 1657415, 4309279, 21546395]

約数ペア:

[(1, 21546395), (5, 4309279), (13, 1657415), (17, 1267435), (31, 695045), (37, 582335), (65, 331483), (85, 253487), (155, 139009), (185, 116467), (221, 97495), (289, 74555), (403, 53465), (481, 44795), (527, 40885), (629, 34255), (1105, 19499), (1147, 18785), (1445, 14911), (2015, 10693), (2405, 8959), (2635, 8177), (3145, 6851), (3757, 5735)]