21655665

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3187}}^1$

素因数の和:3349

約数の個数: 24

約数和(自身を含む): 37796928

約数和(自身を除く): 16141263

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 3187, 6795, 9561, 15935, 28683, 47805, 143415, 481237, 1443711, 2406185, 4331133, 7218555, 21655665]

約数ペア:

[(1, 21655665), (3, 7218555), (5, 4331133), (9, 2406185), (15, 1443711), (45, 481237), (151, 143415), (453, 47805), (755, 28683), (1359, 15935), (2265, 9561), (3187, 6795)]