21188925

素因数分解:

$3^3\times 5^2\times {\mathrm{31391}}^1$

素因数の和:31410

約数の個数: 24

約数和(自身を含む): 38926080

約数和(自身を除く): 17737155

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31391, 94173, 156955, 282519, 470865, 784775, 847557, 1412595, 2354325, 4237785, 7062975, 21188925]

約数ペア:

[(1, 21188925), (3, 7062975), (5, 4237785), (9, 2354325), (15, 1412595), (25, 847557), (27, 784775), (45, 470865), (75, 282519), (135, 156955), (225, 94173), (675, 31391)]