21440155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{853}}^1$

素因数の和:1326

約数の個数: 16

約数和(自身を含む): 28161504

約数和(自身を除く): 6721349

約数列:

[1, 5, 11, 55, 457, 853, 2285, 4265, 5027, 9383, 25135, 46915, 389821, 1949105, 4288031, 21440155]

約数ペア:

[(1, 21440155), (5, 4288031), (11, 1949105), (55, 389821), (457, 46915), (853, 25135), (2285, 9383), (4265, 5027)]