21029247

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{9859}}^1$

素因数の和:9947

約数の個数: 16

約数和(自身を含む): 31552000

約数和(自身を除く): 10522753

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 9859, 29577, 88731, 266193, 778861, 2336583, 7009749, 21029247]

約数ペア:

[(1, 21029247), (3, 7009749), (9, 2336583), (27, 778861), (79, 266193), (237, 88731), (711, 29577), (2133, 9859)]