19820845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{647}}^1$

素因数の和:1220

約数の個数: 16

約数和(自身を含む): 26034048

約数和(自身を除く): 6213203

約数列:

[1, 5, 11, 55, 557, 647, 2785, 3235, 6127, 7117, 30635, 35585, 360379, 1801895, 3964169, 19820845]

約数ペア:

[(1, 19820845), (5, 3964169), (11, 1801895), (55, 360379), (557, 35585), (647, 30635), (2785, 7117), (3235, 6127)]