21897928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{210557}}^1$

素因数の和:210576

約数の個数: 16

約数和(自身を含む): 44217180

約数和(自身を除く): 22319252

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 210557, 421114, 842228, 1684456, 2737241, 5474482, 10948964, 21897928]

約数ペア:

[(1, 21897928), (2, 10948964), (4, 5474482), (8, 2737241), (13, 1684456), (26, 842228), (52, 421114), (104, 210557)]