21839440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{661}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 59103360

約数和(自身を除く): 37263920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 59, 70, 80, 112, 118, 140, 236, 280, 295, 413, 472, 560, 590, 661, 826, 944, 1180, 1322, 1652, 2065, 2360, 2644, 3304, 3305, 4130, 4627, 4720, 5288, 6608, 6610, 8260, 9254, 10576, 13220, 16520, 18508, 23135, 26440, 33040, 37016, 38999, 46270, 52880, 74032, 77998, 92540, 155996, 185080, 194995, 272993, 311992, 370160, 389990, 545986, 623984, 779980, 1091972, 1364965, 1559960, 2183944, 2729930, 3119920, 4367888, 5459860, 10919720, 21839440]

約数ペア:

[(1, 21839440), (2, 10919720), (4, 5459860), (5, 4367888), (7, 3119920), (8, 2729930), (10, 2183944), (14, 1559960), (16, 1364965), (20, 1091972), (28, 779980), (35, 623984), (40, 545986), (56, 389990), (59, 370160), (70, 311992), (80, 272993), (112, 194995), (118, 185080), (140, 155996), (236, 92540), (280, 77998), (295, 74032), (413, 52880), (472, 46270), (560, 38999), (590, 37016), (661, 33040), (826, 26440), (944, 23135), (1180, 18508), (1322, 16520), (1652, 13220), (2065, 10576), (2360, 9254), (2644, 8260), (3304, 6610), (3305, 6608), (4130, 5288), (4627, 4720)]