40720225

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2557}}^1$

素因数の和:2594

約数の個数: 36

約数和(自身を含む): 63279804

約数和(自身を除く): 22559579

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1225, 2275, 2557, 3185, 12785, 15925, 17899, 33241, 63925, 89495, 125293, 166205, 232687, 447475, 626465, 831025, 1163435, 1628809, 3132325, 5817175, 8144045, 40720225]

約数ペア:

[(1, 40720225), (5, 8144045), (7, 5817175), (13, 3132325), (25, 1628809), (35, 1163435), (49, 831025), (65, 626465), (91, 447475), (175, 232687), (245, 166205), (325, 125293), (455, 89495), (637, 63925), (1225, 33241), (2275, 17899), (2557, 15925), (3185, 12785)]