19958172

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4127}}^1$

素因数の和:4178

約数の個数: 48

約数和(自身を含む): 51781632

約数和(自身を除く): 31823460

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 186, 372, 403, 806, 1209, 1612, 2418, 4127, 4836, 8254, 12381, 16508, 24762, 49524, 53651, 107302, 127937, 160953, 214604, 255874, 321906, 383811, 511748, 643812, 767622, 1535244, 1663181, 3326362, 4989543, 6652724, 9979086, 19958172]

約数ペア:

[(1, 19958172), (2, 9979086), (3, 6652724), (4, 4989543), (6, 3326362), (12, 1663181), (13, 1535244), (26, 767622), (31, 643812), (39, 511748), (52, 383811), (62, 321906), (78, 255874), (93, 214604), (124, 160953), (156, 127937), (186, 107302), (372, 53651), (403, 49524), (806, 24762), (1209, 16508), (1612, 12381), (2418, 8254), (4127, 4836)]