221247

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 24

約数和(自身を含む): 361088

約数和(自身を除く): 139841

約数列:

[1, 3, 9, 13, 31, 39, 61, 93, 117, 183, 279, 403, 549, 793, 1209, 1891, 2379, 3627, 5673, 7137, 17019, 24583, 73749, 221247]

約数ペア:

[(1, 221247), (3, 73749), (9, 24583), (13, 17019), (31, 7137), (39, 5673), (61, 3627), (93, 2379), (117, 1891), (183, 1209), (279, 793), (403, 549)]