78421660

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{9587}}^1$

素因数の和:10005

約数の個数: 24

約数和(自身を含む): 165105360

約数和(自身を除く): 86683700

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 9587, 19174, 38348, 47935, 95870, 191740, 3921083, 7842166, 15684332, 19605415, 39210830, 78421660]

約数ペア:

[(1, 78421660), (2, 39210830), (4, 19605415), (5, 15684332), (10, 7842166), (20, 3921083), (409, 191740), (818, 95870), (1636, 47935), (2045, 38348), (4090, 19174), (8180, 9587)]