21908943

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5701}}^1$

素因数の和:5775

約数の個数: 24

約数和(自身を含む): 36766496

約数和(自身を除く): 14857553

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5701, 17103, 39907, 51309, 119721, 347761, 359163, 1043283, 2434327, 3129849, 7302981, 21908943]

約数ペア:

[(1, 21908943), (3, 7302981), (7, 3129849), (9, 2434327), (21, 1043283), (61, 359163), (63, 347761), (183, 119721), (427, 51309), (549, 39907), (1281, 17103), (3843, 5701)]