21813605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{613}}^1\times {\mathrm{647}}^1$

素因数の和:1276

約数の個数: 16

約数和(自身を含む): 28646784

約数和(自身を除く): 6833179

約数列:

[1, 5, 11, 55, 613, 647, 3065, 3235, 6743, 7117, 33715, 35585, 396611, 1983055, 4362721, 21813605]

約数ペア:

[(1, 21813605), (5, 4362721), (11, 1983055), (55, 396611), (613, 35585), (647, 33715), (3065, 7117), (3235, 6743)]