20880628

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{1663}}^1$

素因数の和:1783

約数の個数: 24

約数和(自身を含む): 37925888

約数和(自身を除く): 17045260

約数列:

[1, 2, 4, 43, 73, 86, 146, 172, 292, 1663, 3139, 3326, 6278, 6652, 12556, 71509, 121399, 143018, 242798, 286036, 485596, 5220157, 10440314, 20880628]

約数ペア:

[(1, 20880628), (2, 10440314), (4, 5220157), (43, 485596), (73, 286036), (86, 242798), (146, 143018), (172, 121399), (292, 71509), (1663, 12556), (3139, 6652), (3326, 6278)]