19990737

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2801}}^1$

素因数の和:2881

約数の個数: 24

約数和(自身を含む): 31617768

約数和(自身を除く): 11627031

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2801, 7137, 8403, 25209, 36413, 109239, 170861, 327717, 512583, 1537749, 2221193, 6663579, 19990737]

約数ペア:

[(1, 19990737), (3, 6663579), (9, 2221193), (13, 1537749), (39, 512583), (61, 327717), (117, 170861), (183, 109239), (549, 36413), (793, 25209), (2379, 8403), (2801, 7137)]