21235137

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 36414336

約数和(自身を除く): 15179199

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 121, 137, 183, 231, 363, 411, 427, 671, 847, 959, 1281, 1507, 2013, 2541, 2877, 4521, 4697, 7381, 8357, 10549, 14091, 16577, 22143, 25071, 31647, 49731, 51667, 58499, 91927, 116039, 155001, 175497, 275781, 348117, 643489, 1011197, 1930467, 3033591, 7078379, 21235137]

約数ペア:

[(1, 21235137), (3, 7078379), (7, 3033591), (11, 1930467), (21, 1011197), (33, 643489), (61, 348117), (77, 275781), (121, 175497), (137, 155001), (183, 116039), (231, 91927), (363, 58499), (411, 51667), (427, 49731), (671, 31647), (847, 25071), (959, 22143), (1281, 16577), (1507, 14091), (2013, 10549), (2541, 8357), (2877, 7381), (4521, 4697)]