21261303

素因数分解:

$3^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1201}}^1$

素因数の和:1495

約数の個数: 24

約数和(自身を含む): 35252256

約数和(自身を除く): 13990953

約数列:

[1, 3, 7, 9, 21, 63, 281, 843, 1201, 1967, 2529, 3603, 5901, 8407, 10809, 17703, 25221, 75663, 337481, 1012443, 2362367, 3037329, 7087101, 21261303]

約数ペア:

[(1, 21261303), (3, 7087101), (7, 3037329), (9, 2362367), (21, 1012443), (63, 337481), (281, 75663), (843, 25221), (1201, 17703), (1967, 10809), (2529, 8407), (3603, 5901)]