21731805

素因数分解:

$3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1459}}^1$

素因数の和:1801

約数の個数: 24

約数和(自身を含む): 37808160

約数和(自身を除く): 16076355

約数列:

[1, 3, 5, 9, 15, 45, 331, 993, 1459, 1655, 2979, 4377, 4965, 7295, 13131, 14895, 21885, 65655, 482929, 1448787, 2414645, 4346361, 7243935, 21731805]

約数ペア:

[(1, 21731805), (3, 7243935), (5, 4346361), (9, 2414645), (15, 1448787), (45, 482929), (331, 65655), (993, 21885), (1459, 14895), (1655, 13131), (2979, 7295), (4377, 4965)]