398040002

素因数分解:

$2^1\times {\mathrm{20101}}^1\times {\mathrm{9901}}^1$

素因数の和:30004

約数の個数: 8

約数和(自身を含む): 597150012

約数和(自身を除く): 199110010

約数列:

[1, 2, 9901, 19802, 20101, 40202, 199020001, 398040002]

約数ペア:

[(1, 398040002), (2, 199020001), (9901, 40202), (19802, 20101)]