216489

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1$

素因数の和:97

約数の個数: 24

約数和(自身を含む): 363072

約数和(自身を除く): 146583

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 169, 183, 273, 427, 507, 793, 1183, 1281, 2379, 3549, 5551, 10309, 16653, 30927, 72163, 216489]

約数ペア:

[(1, 216489), (3, 72163), (7, 30927), (13, 16653), (21, 10309), (39, 5551), (61, 3549), (91, 2379), (169, 1281), (183, 1183), (273, 793), (427, 507)]