20691436

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{251}}^1\times {\mathrm{557}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 37403856

約数和(自身を除く): 16712420

約数列:

[1, 2, 4, 37, 74, 148, 251, 502, 557, 1004, 1114, 2228, 9287, 18574, 20609, 37148, 41218, 82436, 139807, 279614, 559228, 5172859, 10345718, 20691436]

約数ペア:

[(1, 20691436), (2, 10345718), (4, 5172859), (37, 559228), (74, 279614), (148, 139807), (251, 82436), (502, 41218), (557, 37148), (1004, 20609), (1114, 18574), (2228, 9287)]