19948815

素因数分解:

$3^3\times 5^1\times {\mathrm{147769}}^1$

素因数の和:147783

約数の個数: 16

約数和(自身を含む): 35464800

約数和(自身を除く): 15515985

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147769, 443307, 738845, 1329921, 2216535, 3989763, 6649605, 19948815]

約数ペア:

[(1, 19948815), (3, 6649605), (5, 3989763), (9, 2216535), (15, 1329921), (27, 738845), (45, 443307), (135, 147769)]