20065525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1523}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 27212544

約数和(自身を除く): 7147019

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1523, 2635, 7615, 13175, 25891, 38075, 47213, 129455, 236065, 647275, 802621, 1180325, 4013105, 20065525]

約数ペア:

[(1, 20065525), (5, 4013105), (17, 1180325), (25, 802621), (31, 647275), (85, 236065), (155, 129455), (425, 47213), (527, 38075), (775, 25891), (1523, 13175), (2635, 7615)]