20477275

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9001}}^1$

素因数の和:9031

約数の個数: 24

約数和(自身を含む): 31254944

約数和(自身を除く): 10777669

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9001, 45005, 63007, 117013, 225025, 315035, 585065, 819091, 1575175, 2925325, 4095455, 20477275]

約数ペア:

[(1, 20477275), (5, 4095455), (7, 2925325), (13, 1575175), (25, 819091), (35, 585065), (65, 315035), (91, 225025), (175, 117013), (325, 63007), (455, 45005), (2275, 9001)]