31195554

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 70253568

約数和(自身を除く): 39058014

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 71, 78, 86, 129, 131, 142, 213, 258, 262, 393, 426, 559, 786, 923, 1118, 1677, 1703, 1846, 2769, 3053, 3354, 3406, 5109, 5538, 5633, 6106, 9159, 9301, 10218, 11266, 16899, 18318, 18602, 27903, 33798, 39689, 55806, 73229, 79378, 119067, 120913, 146458, 219687, 238134, 241826, 362739, 399943, 439374, 725478, 799886, 1199829, 2399658, 5199259, 10398518, 15597777, 31195554]

約数ペア:

[(1, 31195554), (2, 15597777), (3, 10398518), (6, 5199259), (13, 2399658), (26, 1199829), (39, 799886), (43, 725478), (71, 439374), (78, 399943), (86, 362739), (129, 241826), (131, 238134), (142, 219687), (213, 146458), (258, 120913), (262, 119067), (393, 79378), (426, 73229), (559, 55806), (786, 39689), (923, 33798), (1118, 27903), (1677, 18602), (1703, 18318), (1846, 16899), (2769, 11266), (3053, 10218), (3354, 9301), (3406, 9159), (5109, 6106), (5538, 5633)]