20504575

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9013}}^1$

素因数の和:9043

約数の個数: 24

約数和(自身を含む): 31296608

約数和(自身を除く): 10792033

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9013, 45065, 63091, 117169, 225325, 315455, 585845, 820183, 1577275, 2929225, 4100915, 20504575]

約数ペア:

[(1, 20504575), (5, 4100915), (7, 2929225), (13, 1577275), (25, 820183), (35, 585845), (65, 315455), (91, 225325), (175, 117169), (325, 63091), (455, 45065), (2275, 9013)]