261621297

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2543}}^1$

素因数の和:2650

約数の個数: 48

約数和(自身を含む): 457187328

約数和(自身を除く): 195566031

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 71, 161, 207, 213, 483, 497, 639, 1449, 1491, 1633, 2543, 4473, 4899, 7629, 11431, 14697, 17801, 22887, 34293, 53403, 58489, 102879, 160209, 175467, 180553, 409423, 526401, 541659, 1228269, 1263871, 1624977, 3684807, 3791613, 4152719, 11374839, 12458157, 29069033, 37374471, 87207099, 261621297]

約数ペア:

[(1, 261621297), (3, 87207099), (7, 37374471), (9, 29069033), (21, 12458157), (23, 11374839), (63, 4152719), (69, 3791613), (71, 3684807), (161, 1624977), (207, 1263871), (213, 1228269), (483, 541659), (497, 526401), (639, 409423), (1449, 180553), (1491, 175467), (1633, 160209), (2543, 102879), (4473, 58489), (4899, 53403), (7629, 34293), (11431, 22887), (14697, 17801)]