21321711

素因数分解:

$3^4\times {\mathrm{461}}^1\times {\mathrm{571}}^1$

素因数の和:1044

約数の個数: 20

約数和(自身を含む): 31975944

約数和(自身を除く): 10654233

約数列:

[1, 3, 9, 27, 81, 461, 571, 1383, 1713, 4149, 5139, 12447, 15417, 37341, 46251, 263231, 789693, 2369079, 7107237, 21321711]

約数ペア:

[(1, 21321711), (3, 7107237), (9, 2369079), (27, 789693), (81, 263231), (461, 46251), (571, 37341), (1383, 15417), (1713, 12447), (4149, 5139)]