31999440002

素因数分解:

$2^1\times {\mathrm{79999}}^1\times {\mathrm{199999}}^1$

素因数の和:280000

約数の個数: 8

約数和(自身を含む): 48000000000

約数和(自身を除く): 16000559998

約数列:

[1, 2, 79999, 159998, 199999, 399998, 15999720001, 31999440002]

約数ペア:

[(1, 31999440002), (2, 15999720001), (79999, 399998), (159998, 199999)]