21609225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8731}}^1$

素因数の和:8758

約数の個数: 36

約数和(自身を含む): 42227952

約数和(自身を除く): 20618727

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8731, 26193, 43655, 78579, 96041, 130965, 218275, 288123, 392895, 480205, 654825, 864369, 1440615, 1964475, 2401025, 4321845, 7203075, 21609225]

約数ペア:

[(1, 21609225), (3, 7203075), (5, 4321845), (9, 2401025), (11, 1964475), (15, 1440615), (25, 864369), (33, 654825), (45, 480205), (55, 392895), (75, 288123), (99, 218275), (165, 130965), (225, 96041), (275, 78579), (495, 43655), (825, 26193), (2475, 8731)]