40398020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155377}}^1$

素因数の和:155399

約数の個数: 24

約数和(自身を含む): 91362264

約数和(自身を除く): 50964244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 155377, 310754, 621508, 776885, 1553770, 2019901, 3107540, 4039802, 8079604, 10099505, 20199010, 40398020]

約数ペア:

[(1, 40398020), (2, 20199010), (4, 10099505), (5, 8079604), (10, 4039802), (13, 3107540), (20, 2019901), (26, 1553770), (52, 776885), (65, 621508), (130, 310754), (260, 155377)]