18981405

素因数分解:

$3^3\times 5^1\times {\mathrm{140603}}^1$

素因数の和:140617

約数の個数: 16

約数和(自身を含む): 33744960

約数和(自身を除く): 14763555

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 140603, 421809, 703015, 1265427, 2109045, 3796281, 6327135, 18981405]

約数ペア:

[(1, 18981405), (3, 6327135), (5, 3796281), (9, 2109045), (15, 1265427), (27, 703015), (45, 421809), (135, 140603)]