20651428

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 22095836

約数列:

[1, 2, 4, 7, 14, 28, 61, 107, 113, 122, 214, 226, 244, 427, 428, 452, 749, 791, 854, 1498, 1582, 1708, 2996, 3164, 6527, 6893, 12091, 13054, 13786, 24182, 26108, 27572, 45689, 48251, 48364, 84637, 91378, 96502, 169274, 182756, 193004, 338548, 737551, 1475102, 2950204, 5162857, 10325714, 20651428]

約数ペア:

[(1, 20651428), (2, 10325714), (4, 5162857), (7, 2950204), (14, 1475102), (28, 737551), (61, 338548), (107, 193004), (113, 182756), (122, 169274), (214, 96502), (226, 91378), (244, 84637), (427, 48364), (428, 48251), (452, 45689), (749, 27572), (791, 26108), (854, 24182), (1498, 13786), (1582, 13054), (1708, 12091), (2996, 6893), (3164, 6527)]