81956889

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{347}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 142451712

約数和(自身を除く): 60494823

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 163, 207, 347, 483, 489, 1041, 1141, 1449, 1467, 2429, 3123, 3423, 3749, 7287, 7981, 10269, 11247, 21861, 23943, 26243, 33741, 55867, 56561, 71829, 78729, 167601, 169683, 236187, 395927, 502803, 509049, 1187781, 1300903, 3563343, 3902709, 9106321, 11708127, 27318963, 81956889]

約数ペア:

[(1, 81956889), (3, 27318963), (7, 11708127), (9, 9106321), (21, 3902709), (23, 3563343), (63, 1300903), (69, 1187781), (161, 509049), (163, 502803), (207, 395927), (347, 236187), (483, 169683), (489, 167601), (1041, 78729), (1141, 71829), (1449, 56561), (1467, 55867), (2429, 33741), (3123, 26243), (3423, 23943), (3749, 21861), (7287, 11247), (7981, 10269)]