17988885

素因数分解:

$3^4\times 5^1\times {\mathrm{44417}}^1$

素因数の和:44434

約数の個数: 20

約数和(自身を含む): 32247468

約数和(自身を除く): 14258583

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 44417, 133251, 222085, 399753, 666255, 1199259, 1998765, 3597777, 5996295, 17988885]

約数ペア:

[(1, 17988885), (3, 5996295), (5, 3597777), (9, 1998765), (15, 1199259), (27, 666255), (45, 399753), (81, 222085), (135, 133251), (405, 44417)]