21332871

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6389}}^1$

素因数の和:6455

約数の個数: 24

約数和(自身を含む): 35886240

約数和(自身を除く): 14553369

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6389, 19167, 44723, 57501, 134169, 338617, 402507, 1015851, 2370319, 3047553, 7110957, 21332871]

約数ペア:

[(1, 21332871), (3, 7110957), (7, 3047553), (9, 2370319), (21, 1015851), (53, 402507), (63, 338617), (159, 134169), (371, 57501), (477, 44723), (1113, 19167), (3339, 6389)]