40749920

素因数分解:

$2^5\times 5^1\times {\mathrm{257}}^1\times {\mathrm{991}}^1$

素因数の和:1263

約数の個数: 48

約数和(自身を含む): 96743808

約数和(自身を除く): 55993888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 257, 514, 991, 1028, 1285, 1982, 2056, 2570, 3964, 4112, 4955, 5140, 7928, 8224, 9910, 10280, 15856, 19820, 20560, 31712, 39640, 41120, 79280, 158560, 254687, 509374, 1018748, 1273435, 2037496, 2546870, 4074992, 5093740, 8149984, 10187480, 20374960, 40749920]

約数ペア:

[(1, 40749920), (2, 20374960), (4, 10187480), (5, 8149984), (8, 5093740), (10, 4074992), (16, 2546870), (20, 2037496), (32, 1273435), (40, 1018748), (80, 509374), (160, 254687), (257, 158560), (514, 79280), (991, 41120), (1028, 39640), (1285, 31712), (1982, 20560), (2056, 19820), (2570, 15856), (3964, 10280), (4112, 9910), (4955, 8224), (5140, 7928)]