20515970

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43651}}^1$

素因数の和:43705

約数の個数: 16

約数和(自身を含む): 37715328

約数和(自身を除く): 17199358

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 43651, 87302, 218255, 436510, 2051597, 4103194, 10257985, 20515970]

約数ペア:

[(1, 20515970), (2, 10257985), (5, 4103194), (10, 2051597), (47, 436510), (94, 218255), (235, 87302), (470, 43651)]