20889825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25321}}^1$

素因数の和:25345

約数の個数: 24

約数和(自身を含む): 37679136

約数和(自身を除く): 16789311

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25321, 75963, 126605, 278531, 379815, 633025, 835593, 1392655, 1899075, 4177965, 6963275, 20889825]

約数ペア:

[(1, 20889825), (3, 6963275), (5, 4177965), (11, 1899075), (15, 1392655), (25, 835593), (33, 633025), (55, 379815), (75, 278531), (165, 126605), (275, 75963), (825, 25321)]