19089909

素因数分解:

$3^2\times {\mathrm{101}}^1\times {\mathrm{21001}}^1$

素因数の和:21108

約数の個数: 12

約数和(自身を含む): 27848652

約数和(自身を除く): 8758743

約数列:

[1, 3, 9, 101, 303, 909, 21001, 63003, 189009, 2121101, 6363303, 19089909]

約数ペア:

[(1, 19089909), (3, 6363303), (9, 2121101), (101, 189009), (303, 63003), (909, 21001)]