20293535525

素因数分解:

$5^2\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 25812336000

約数和(自身を除く): 5518800475

約数列:

[1, 5, 25, 109, 149, 151, 331, 545, 745, 755, 1655, 2725, 3725, 3775, 8275, 16241, 16459, 22499, 36079, 49319, 49981, 81205, 82295, 112495, 180395, 246595, 249905, 406025, 411475, 562475, 901975, 1232975, 1249525, 2452391, 5375771, 5447929, 7447169, 12261955, 26878855, 27239645, 37235845, 61309775, 134394275, 136198225, 186179225, 811741421, 4058707105, 20293535525]

約数ペア:

[(1, 20293535525), (5, 4058707105), (25, 811741421), (109, 186179225), (149, 136198225), (151, 134394275), (331, 61309775), (545, 37235845), (745, 27239645), (755, 26878855), (1655, 12261955), (2725, 7447169), (3725, 5447929), (3775, 5375771), (8275, 2452391), (16241, 1249525), (16459, 1232975), (22499, 901975), (36079, 562475), (49319, 411475), (49981, 406025), (81205, 249905), (82295, 246595), (112495, 180395)]