21025053

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5471}}^1$

素因数の和:5545

約数の個数: 24

約数和(自身を含む): 35283456

約数和(自身を除く): 14258403

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5471, 16413, 38297, 49239, 114891, 333731, 344673, 1001193, 2336117, 3003579, 7008351, 21025053]

約数ペア:

[(1, 21025053), (3, 7008351), (7, 3003579), (9, 2336117), (21, 1001193), (61, 344673), (63, 333731), (183, 114891), (427, 49239), (549, 38297), (1281, 16413), (3843, 5471)]