20169900440

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1232879}}^1$

素因数の和:1233299

約数の個数: 32

約数和(自身を含む): 45493272000

約数和(自身を除く): 25323371560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 16360, 1232879, 2465758, 4931516, 6164395, 9863032, 12328790, 24657580, 49315160, 504247511, 1008495022, 2016990044, 2521237555, 4033980088, 5042475110, 10084950220, 20169900440]

約数ペア:

[(1, 20169900440), (2, 10084950220), (4, 5042475110), (5, 4033980088), (8, 2521237555), (10, 2016990044), (20, 1008495022), (40, 504247511), (409, 49315160), (818, 24657580), (1636, 12328790), (2045, 9863032), (3272, 6164395), (4090, 4931516), (8180, 2465758), (16360, 1232879)]