21937491

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 33271680

約数和(自身を除く): 11334189

約数列:

[1, 3, 9, 31, 61, 93, 183, 279, 549, 1289, 1891, 3867, 5673, 11601, 17019, 39959, 78629, 119877, 235887, 359631, 707661, 2437499, 7312497, 21937491]

約数ペア:

[(1, 21937491), (3, 7312497), (9, 2437499), (31, 707661), (61, 359631), (93, 235887), (183, 119877), (279, 78629), (549, 39959), (1289, 17019), (1891, 11601), (3867, 5673)]