389199920

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:582

約数の個数: 80

約数和(自身を含む): 922708800

約数和(自身を除く): 533508880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 149, 206, 298, 317, 412, 515, 596, 634, 745, 824, 1030, 1192, 1268, 1490, 1585, 1648, 2060, 2384, 2536, 2980, 3170, 4120, 5072, 5960, 6340, 8240, 11920, 12680, 15347, 25360, 30694, 32651, 47233, 61388, 65302, 76735, 94466, 122776, 130604, 153470, 163255, 188932, 236165, 245552, 261208, 306940, 326510, 377864, 472330, 522416, 613880, 653020, 755728, 944660, 1227760, 1306040, 1889320, 2612080, 3778640, 4864999, 9729998, 19459996, 24324995, 38919992, 48649990, 77839984, 97299980, 194599960, 389199920]

約数ペア:

[(1, 389199920), (2, 194599960), (4, 97299980), (5, 77839984), (8, 48649990), (10, 38919992), (16, 24324995), (20, 19459996), (40, 9729998), (80, 4864999), (103, 3778640), (149, 2612080), (206, 1889320), (298, 1306040), (317, 1227760), (412, 944660), (515, 755728), (596, 653020), (634, 613880), (745, 522416), (824, 472330), (1030, 377864), (1192, 326510), (1268, 306940), (1490, 261208), (1585, 245552), (1648, 236165), (2060, 188932), (2384, 163255), (2536, 153470), (2980, 130604), (3170, 122776), (4120, 94466), (5072, 76735), (5960, 65302), (6340, 61388), (8240, 47233), (11920, 32651), (12680, 30694), (15347, 25360)]