21958533

素因数分解:

$3^4\times {\mathrm{419}}^1\times {\mathrm{647}}^1$

素因数の和:1078

約数の個数: 20

約数和(自身を含む): 32931360

約数和(自身を除く): 10972827

約数列:

[1, 3, 9, 27, 81, 419, 647, 1257, 1941, 3771, 5823, 11313, 17469, 33939, 52407, 271093, 813279, 2439837, 7319511, 21958533]

約数ペア:

[(1, 21958533), (3, 7319511), (9, 2439837), (27, 813279), (81, 271093), (419, 52407), (647, 33939), (1257, 17469), (1941, 11313), (3771, 5823)]