20781695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{373}}^1\times {\mathrm{1013}}^1$

素因数の和:1402

約数の個数: 16

約数和(自身を含む): 27304992

約数和(自身を除く): 6523297

約数列:

[1, 5, 11, 55, 373, 1013, 1865, 4103, 5065, 11143, 20515, 55715, 377849, 1889245, 4156339, 20781695]

約数ペア:

[(1, 20781695), (5, 4156339), (11, 1889245), (55, 377849), (373, 55715), (1013, 20515), (1865, 11143), (4103, 5065)]