21127797

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2393}}^1$

素因数の和:2514

約数の個数: 20

約数和(自身を含む): 31864140

約数和(自身を除く): 10736343

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2393, 2943, 7179, 8829, 21537, 64611, 193833, 260837, 782511, 2347533, 7042599, 21127797]

約数ペア:

[(1, 21127797), (3, 7042599), (9, 2347533), (27, 782511), (81, 260837), (109, 193833), (327, 64611), (981, 21537), (2393, 8829), (2943, 7179)]