31389520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:332

約数の個数: 80

約数和(自身を含む): 77941440

約数和(自身を除く): 46551920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 107, 152, 190, 193, 214, 304, 380, 386, 428, 535, 760, 772, 856, 965, 1070, 1520, 1544, 1712, 1930, 2033, 2140, 3088, 3667, 3860, 4066, 4280, 7334, 7720, 8132, 8560, 10165, 14668, 15440, 16264, 18335, 20330, 20651, 29336, 32528, 36670, 40660, 41302, 58672, 73340, 81320, 82604, 103255, 146680, 162640, 165208, 206510, 293360, 330416, 392369, 413020, 784738, 826040, 1569476, 1652080, 1961845, 3138952, 3923690, 6277904, 7847380, 15694760, 31389520]

約数ペア:

[(1, 31389520), (2, 15694760), (4, 7847380), (5, 6277904), (8, 3923690), (10, 3138952), (16, 1961845), (19, 1652080), (20, 1569476), (38, 826040), (40, 784738), (76, 413020), (80, 392369), (95, 330416), (107, 293360), (152, 206510), (190, 165208), (193, 162640), (214, 146680), (304, 103255), (380, 82604), (386, 81320), (428, 73340), (535, 58672), (760, 41302), (772, 40660), (856, 36670), (965, 32528), (1070, 29336), (1520, 20651), (1544, 20330), (1712, 18335), (1930, 16264), (2033, 15440), (2140, 14668), (3088, 10165), (3667, 8560), (3860, 8132), (4066, 7720), (4280, 7334)]