18813789

素因数分解:

$3^5\times {\mathrm{139}}^1\times {\mathrm{557}}^1$

素因数の和:711

約数の個数: 24

約数和(自身を含む): 28435680

約数和(自身を除く): 9621891

約数列:

[1, 3, 9, 27, 81, 139, 243, 417, 557, 1251, 1671, 3753, 5013, 11259, 15039, 33777, 45117, 77423, 135351, 232269, 696807, 2090421, 6271263, 18813789]

約数ペア:

[(1, 18813789), (3, 6271263), (9, 2090421), (27, 696807), (81, 232269), (139, 135351), (243, 77423), (417, 45117), (557, 33777), (1251, 15039), (1671, 11259), (3753, 5013)]