81800019

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^2\times {\mathrm{373}}^1$

素因数の和:504

約数の個数: 36

約数和(自身を含む): 137730736

約数和(自身を除く): 55930717

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 373, 413, 531, 1119, 1239, 2611, 3357, 3481, 3717, 7833, 10443, 22007, 23499, 24367, 31329, 66021, 73101, 154049, 198063, 219303, 462147, 1298413, 1386441, 3895239, 9088891, 11685717, 27266673, 81800019]

約数ペア:

[(1, 81800019), (3, 27266673), (7, 11685717), (9, 9088891), (21, 3895239), (59, 1386441), (63, 1298413), (177, 462147), (373, 219303), (413, 198063), (531, 154049), (1119, 73101), (1239, 66021), (2611, 31329), (3357, 24367), (3481, 23499), (3717, 22007), (7833, 10443)]