21757285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5419}}^1$

素因数の和:5508

約数の個数: 16

約数和(自身を含む): 28877760

約数和(自身を除く): 7120475

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 5419, 27095, 59609, 298045, 395587, 1977935, 4351457, 21757285]

約数ペア:

[(1, 21757285), (5, 4351457), (11, 1977935), (55, 395587), (73, 298045), (365, 59609), (803, 27095), (4015, 5419)]