21148378

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{1523}}^1$

素因数の和:1709

約数の個数: 16

約数和(自身を含む): 32589216

約数和(自身を除く): 11440838

約数列:

[1, 2, 53, 106, 131, 262, 1523, 3046, 6943, 13886, 80719, 161438, 199513, 399026, 10574189, 21148378]

約数ペア:

[(1, 21148378), (2, 10574189), (53, 399026), (106, 199513), (131, 161438), (262, 80719), (1523, 13886), (3046, 6943)]