20216511

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1439}}^1$

素因数の和:1675

約数の個数: 24

約数和(自身を含む): 33546240

約数和(自身を除く): 13329729

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1439, 1561, 2007, 4317, 4683, 10073, 12951, 14049, 30219, 90657, 320897, 962691, 2246279, 2888073, 6738837, 20216511]

約数ペア:

[(1, 20216511), (3, 6738837), (7, 2888073), (9, 2246279), (21, 962691), (63, 320897), (223, 90657), (669, 30219), (1439, 14049), (1561, 12951), (2007, 10073), (4317, 4683)]