81866799

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{2543}}^1$

素因数の和:2636

約数の個数: 36

約数和(自身を含む): 139497696

約数和(自身を除く): 57630897

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 657, 1533, 2543, 3577, 4599, 7629, 10731, 17801, 22887, 32193, 53403, 124607, 160209, 185639, 373821, 556917, 1121463, 1299473, 1670751, 3898419, 9096311, 11695257, 27288933, 81866799]

約数ペア:

[(1, 81866799), (3, 27288933), (7, 11695257), (9, 9096311), (21, 3898419), (49, 1670751), (63, 1299473), (73, 1121463), (147, 556917), (219, 373821), (441, 185639), (511, 160209), (657, 124607), (1533, 53403), (2543, 32193), (3577, 22887), (4599, 17801), (7629, 10731)]