20903816

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{70621}}^1$

素因数の和:70664

約数の個数: 16

約数和(自身を含む): 40254540

約数和(自身を除く): 19350724

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 70621, 141242, 282484, 564968, 2612977, 5225954, 10451908, 20903816]

約数ペア:

[(1, 20903816), (2, 10451908), (4, 5225954), (8, 2612977), (37, 564968), (74, 282484), (148, 141242), (296, 70621)]