278340993

素因数分解:

$3^2\times 7^1\times {\mathrm{4418111}}^1$

素因数の和:4418124

約数の個数: 12

約数和(自身を含む): 459483648

約数和(自身を除く): 181142655

約数列:

[1, 3, 7, 9, 21, 63, 4418111, 13254333, 30926777, 39762999, 92780331, 278340993]

約数ペア:

[(1, 278340993), (3, 92780331), (7, 39762999), (9, 30926777), (21, 13254333), (63, 4418111)]