18741520

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{683}}^1$

素因数の和:717

約数の個数: 80

約数和(自身を含む): 50889600

約数和(自身を除く): 32148080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 683, 686, 784, 980, 1366, 1372, 1715, 1960, 2732, 2744, 3415, 3430, 3920, 4781, 5464, 5488, 6830, 6860, 9562, 10928, 13660, 13720, 19124, 23905, 27320, 27440, 33467, 38248, 47810, 54640, 66934, 76496, 95620, 133868, 167335, 191240, 234269, 267736, 334670, 382480, 468538, 535472, 669340, 937076, 1171345, 1338680, 1874152, 2342690, 2677360, 3748304, 4685380, 9370760, 18741520]

約数ペア:

[(1, 18741520), (2, 9370760), (4, 4685380), (5, 3748304), (7, 2677360), (8, 2342690), (10, 1874152), (14, 1338680), (16, 1171345), (20, 937076), (28, 669340), (35, 535472), (40, 468538), (49, 382480), (56, 334670), (70, 267736), (80, 234269), (98, 191240), (112, 167335), (140, 133868), (196, 95620), (245, 76496), (280, 66934), (343, 54640), (392, 47810), (490, 38248), (560, 33467), (683, 27440), (686, 27320), (784, 23905), (980, 19124), (1366, 13720), (1372, 13660), (1715, 10928), (1960, 9562), (2732, 6860), (2744, 6830), (3415, 5488), (3430, 5464), (3920, 4781)]