21401805

素因数分解:

$3^1\times 5^1\times {\mathrm{683}}^1\times {\mathrm{2089}}^1$

素因数の和:2780

約数の個数: 16

約数和(自身を含む): 34309440

約数和(自身を除く): 12907635

約数列:

[1, 3, 5, 15, 683, 2049, 2089, 3415, 6267, 10245, 10445, 31335, 1426787, 4280361, 7133935, 21401805]

約数ペア:

[(1, 21401805), (3, 7133935), (5, 4280361), (15, 1426787), (683, 31335), (2049, 10445), (2089, 10245), (3415, 6267)]