21223855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5449}}^1$

素因数の和:5514

約数の個数: 16

約数和(自身を含む): 27468000

約数和(自身を除く): 6244145

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5449, 27245, 103531, 223409, 517655, 1117045, 4244771, 21223855]

約数ペア:

[(1, 21223855), (5, 4244771), (19, 1117045), (41, 517655), (95, 223409), (205, 103531), (779, 27245), (3895, 5449)]