21392349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{4129}}^1$

素因数の和:4300

約数の個数: 16

約数和(自身を含む): 31321920

約数和(自身を除く): 9929571

約数列:

[1, 3, 11, 33, 157, 471, 1727, 4129, 5181, 12387, 45419, 136257, 648253, 1944759, 7130783, 21392349]

約数ペア:

[(1, 21392349), (3, 7130783), (11, 1944759), (33, 648253), (157, 136257), (471, 45419), (1727, 12387), (4129, 5181)]