20921256

素因数分解:

$2^3\times 3^2\times {\mathrm{277}}^1\times {\mathrm{1049}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 56920500

約数和(自身を除く): 35999244

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 277, 554, 831, 1049, 1108, 1662, 2098, 2216, 2493, 3147, 3324, 4196, 4986, 6294, 6648, 8392, 9441, 9972, 12588, 18882, 19944, 25176, 37764, 75528, 290573, 581146, 871719, 1162292, 1743438, 2324584, 2615157, 3486876, 5230314, 6973752, 10460628, 20921256]

約数ペア:

[(1, 20921256), (2, 10460628), (3, 6973752), (4, 5230314), (6, 3486876), (8, 2615157), (9, 2324584), (12, 1743438), (18, 1162292), (24, 871719), (36, 581146), (72, 290573), (277, 75528), (554, 37764), (831, 25176), (1049, 19944), (1108, 18882), (1662, 12588), (2098, 9972), (2216, 9441), (2493, 8392), (3147, 6648), (3324, 6294), (4196, 4986)]