218880405

素因数分解:

$3^2\times 5^1\times {\mathrm{4864009}}^1$

素因数の和:4864020

約数の個数: 12

約数和(自身を含む): 379392780

約数和(自身を除く): 160512375

約数列:

[1, 3, 5, 9, 15, 45, 4864009, 14592027, 24320045, 43776081, 72960135, 218880405]

約数ペア:

[(1, 218880405), (3, 72960135), (5, 43776081), (9, 24320045), (15, 14592027), (45, 4864009)]