21421925

素因数分解:

$5^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{733}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 30581376

約数和(自身を除く): 9159451

約数列:

[1, 5, 7, 25, 35, 167, 175, 733, 835, 1169, 3665, 4175, 5131, 5845, 18325, 25655, 29225, 122411, 128275, 612055, 856877, 3060275, 4284385, 21421925]

約数ペア:

[(1, 21421925), (5, 4284385), (7, 3060275), (25, 856877), (35, 612055), (167, 128275), (175, 122411), (733, 29225), (835, 25655), (1169, 18325), (3665, 5845), (4175, 5131)]