393912315

素因数分解:

$3^4\times 5^1\times {\mathrm{972623}}^1$

素因数の和:972640

約数の個数: 20

約数和(自身を含む): 706125024

約数和(自身を除く): 312212709

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 972623, 2917869, 4863115, 8753607, 14589345, 26260821, 43768035, 78782463, 131304105, 393912315]

約数ペア:

[(1, 393912315), (3, 131304105), (5, 78782463), (9, 43768035), (15, 26260821), (27, 14589345), (45, 8753607), (81, 4863115), (135, 2917869), (405, 972623)]