20390868

素因数分解:

$2^2\times 3^2\times {\mathrm{566413}}^1$

素因数の和:566423

約数の個数: 18

約数和(自身を含む): 51543674

約数和(自身を除く): 31152806

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 566413, 1132826, 1699239, 2265652, 3398478, 5097717, 6796956, 10195434, 20390868]

約数ペア:

[(1, 20390868), (2, 10195434), (3, 6796956), (4, 5097717), (6, 3398478), (9, 2265652), (12, 1699239), (18, 1132826), (36, 566413)]