21839769

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5683}}^1$

素因数の和:5757

約数の個数: 24

約数和(自身を含む): 36650432

約数和(自身を除く): 14810663

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5683, 17049, 39781, 51147, 119343, 346663, 358029, 1039989, 2426641, 3119967, 7279923, 21839769]

約数ペア:

[(1, 21839769), (3, 7279923), (7, 3119967), (9, 2426641), (21, 1039989), (61, 358029), (63, 346663), (183, 119343), (427, 51147), (549, 39781), (1281, 17049), (3843, 5683)]