20105997925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61864609}}^1$

素因数の和:61864632

約数の個数: 12

約数和(自身を含む): 26849240740

約数和(自身を除く): 6743242815

約数列:

[1, 5, 13, 25, 65, 325, 61864609, 309323045, 804239917, 1546615225, 4021199585, 20105997925]

約数ペア:

[(1, 20105997925), (5, 4021199585), (13, 1546615225), (25, 804239917), (65, 309323045), (325, 61864609)]