20679858

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^2\times {\mathrm{409}}^1$

素因数の和:523

約数の個数: 36

約数和(自身を含む): 45779370

約数和(自身を除く): 25099512

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 159, 318, 409, 477, 818, 954, 1227, 2454, 2809, 3681, 5618, 7362, 8427, 16854, 21677, 25281, 43354, 50562, 65031, 130062, 195093, 390186, 1148881, 2297762, 3446643, 6893286, 10339929, 20679858]

約数ペア:

[(1, 20679858), (2, 10339929), (3, 6893286), (6, 3446643), (9, 2297762), (18, 1148881), (53, 390186), (106, 195093), (159, 130062), (318, 65031), (409, 50562), (477, 43354), (818, 25281), (954, 21677), (1227, 16854), (2454, 8427), (2809, 7362), (3681, 5618)]