21618891

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11833}}^1$

素因数の和:11875

約数の個数: 24

約数和(自身を含む): 36922080

約数和(自身を除く): 15303189

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11833, 35499, 82831, 106497, 248493, 343157, 745479, 1029471, 2402099, 3088413, 7206297, 21618891]

約数ペア:

[(1, 21618891), (3, 7206297), (7, 3088413), (9, 2402099), (21, 1029471), (29, 745479), (63, 343157), (87, 248493), (203, 106497), (261, 82831), (609, 35499), (1827, 11833)]