19814721

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{1303}}^1$

素因数の和:1480

約数の個数: 16

約数和(自身を含む): 27352704

約数和(自身を除く): 7537983

約数列:

[1, 3, 37, 111, 137, 411, 1303, 3909, 5069, 15207, 48211, 144633, 178511, 535533, 6604907, 19814721]

約数ペア:

[(1, 19814721), (3, 6604907), (37, 535533), (111, 178511), (137, 144633), (411, 48211), (1303, 15207), (3909, 5069)]