80671160

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4931}}^1$

素因数の和:5351

約数の個数: 32

約数和(自身を含む): 181990800

約数和(自身を除く): 101319640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 4931, 8180, 9862, 16360, 19724, 24655, 39448, 49310, 98620, 197240, 2016779, 4033558, 8067116, 10083895, 16134232, 20167790, 40335580, 80671160]

約数ペア:

[(1, 80671160), (2, 40335580), (4, 20167790), (5, 16134232), (8, 10083895), (10, 8067116), (20, 4033558), (40, 2016779), (409, 197240), (818, 98620), (1636, 49310), (2045, 39448), (3272, 24655), (4090, 19724), (4931, 16360), (8180, 9862)]