828080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{941}}^1$

素因数の和:965

約数の個数: 40

約数和(自身を含む): 2102544

約数和(自身を除く): 1274464

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 941, 1882, 3764, 4705, 7528, 9410, 10351, 15056, 18820, 20702, 37640, 41404, 51755, 75280, 82808, 103510, 165616, 207020, 414040, 828080]

約数ペア:

[(1, 828080), (2, 414040), (4, 207020), (5, 165616), (8, 103510), (10, 82808), (11, 75280), (16, 51755), (20, 41404), (22, 37640), (40, 20702), (44, 18820), (55, 15056), (80, 10351), (88, 9410), (110, 7528), (176, 4705), (220, 3764), (440, 1882), (880, 941)]