21320563

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 25127424

約数和(自身を除く): 3806861

約数列:

[1, 11, 23, 47, 121, 163, 253, 517, 1081, 1793, 2783, 3749, 5687, 7661, 11891, 19723, 41239, 84271, 130801, 176203, 453629, 926981, 1938233, 21320563]

約数ペア:

[(1, 21320563), (11, 1938233), (23, 926981), (47, 453629), (121, 176203), (163, 130801), (253, 84271), (517, 41239), (1081, 19723), (1793, 11891), (2783, 7661), (3749, 5687)]