20519760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{443}}^1$

素因数の和:652

約数の個数: 80

約数和(自身を含む): 64085184

約数和(自身を除く): 43565424

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 193, 240, 386, 443, 579, 772, 886, 965, 1158, 1329, 1544, 1772, 1930, 2215, 2316, 2658, 2895, 3088, 3544, 3860, 4430, 4632, 5316, 5790, 6645, 7088, 7720, 8860, 9264, 10632, 11580, 13290, 15440, 17720, 21264, 23160, 26580, 35440, 46320, 53160, 85499, 106320, 170998, 256497, 341996, 427495, 512994, 683992, 854990, 1025988, 1282485, 1367984, 1709980, 2051976, 2564970, 3419960, 4103952, 5129940, 6839920, 10259880, 20519760]

約数ペア:

[(1, 20519760), (2, 10259880), (3, 6839920), (4, 5129940), (5, 4103952), (6, 3419960), (8, 2564970), (10, 2051976), (12, 1709980), (15, 1367984), (16, 1282485), (20, 1025988), (24, 854990), (30, 683992), (40, 512994), (48, 427495), (60, 341996), (80, 256497), (120, 170998), (193, 106320), (240, 85499), (386, 53160), (443, 46320), (579, 35440), (772, 26580), (886, 23160), (965, 21264), (1158, 17720), (1329, 15440), (1544, 13290), (1772, 11580), (1930, 10632), (2215, 9264), (2316, 8860), (2658, 7720), (2895, 7088), (3088, 6645), (3544, 5790), (3860, 5316), (4430, 4632)]