81697360

素因数分解:

$2^4\times 5^1\times {\mathrm{1021217}}^1$

素因数の和:1021230

約数の個数: 20

約数和(自身を含む): 189946548

約数和(自身を除く): 108249188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1021217, 2042434, 4084868, 5106085, 8169736, 10212170, 16339472, 20424340, 40848680, 81697360]

約数ペア:

[(1, 81697360), (2, 40848680), (4, 20424340), (5, 16339472), (8, 10212170), (10, 8169736), (16, 5106085), (20, 4084868), (40, 2042434), (80, 1021217)]