19905885

素因数分解:

$3^3\times 5^1\times {\mathrm{147451}}^1$

素因数の和:147465

約数の個数: 16

約数和(自身を含む): 35388480

約数和(自身を除く): 15482595

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147451, 442353, 737255, 1327059, 2211765, 3981177, 6635295, 19905885]

約数ペア:

[(1, 19905885), (3, 6635295), (5, 3981177), (9, 2211765), (15, 1327059), (27, 737255), (45, 442353), (135, 147451)]