20806825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:973

約数の個数: 24

約数和(自身を含む): 28197848

約数和(自身を除く): 7391023

約数列:

[1, 5, 13, 25, 65, 73, 325, 365, 877, 949, 1825, 4385, 4745, 11401, 21925, 23725, 57005, 64021, 285025, 320105, 832273, 1600525, 4161365, 20806825]

約数ペア:

[(1, 20806825), (5, 4161365), (13, 1600525), (25, 832273), (65, 320105), (73, 285025), (325, 64021), (365, 57005), (877, 23725), (949, 21925), (1825, 11401), (4385, 4745)]