18994640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 51103872

約数和(自身を除く): 32109232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 107, 112, 140, 214, 280, 317, 428, 535, 560, 634, 749, 856, 1070, 1268, 1498, 1585, 1712, 2140, 2219, 2536, 2996, 3170, 3745, 4280, 4438, 5072, 5992, 6340, 7490, 8560, 8876, 11095, 11984, 12680, 14980, 17752, 22190, 25360, 29960, 33919, 35504, 44380, 59920, 67838, 88760, 135676, 169595, 177520, 237433, 271352, 339190, 474866, 542704, 678380, 949732, 1187165, 1356760, 1899464, 2374330, 2713520, 3798928, 4748660, 9497320, 18994640]

約数ペア:

[(1, 18994640), (2, 9497320), (4, 4748660), (5, 3798928), (7, 2713520), (8, 2374330), (10, 1899464), (14, 1356760), (16, 1187165), (20, 949732), (28, 678380), (35, 542704), (40, 474866), (56, 339190), (70, 271352), (80, 237433), (107, 177520), (112, 169595), (140, 135676), (214, 88760), (280, 67838), (317, 59920), (428, 44380), (535, 35504), (560, 33919), (634, 29960), (749, 25360), (856, 22190), (1070, 17752), (1268, 14980), (1498, 12680), (1585, 11984), (1712, 11095), (2140, 8876), (2219, 8560), (2536, 7490), (2996, 6340), (3170, 5992), (3745, 5072), (4280, 4438)]