81620450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{37963}}^1$

素因数の和:38018

約数の個数: 24

約数和(自身を含む): 155348688

約数和(自身を除く): 73728238

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 37963, 75926, 189815, 379630, 949075, 1632409, 1898150, 3264818, 8162045, 16324090, 40810225, 81620450]

約数ペア:

[(1, 81620450), (2, 40810225), (5, 16324090), (10, 8162045), (25, 3264818), (43, 1898150), (50, 1632409), (86, 949075), (215, 379630), (430, 189815), (1075, 75926), (2150, 37963)]