19764140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8167}}^1$

素因数の和:8198

約数の個数: 36

約数和(自身を含む): 45626448

約数和(自身を除く): 25862308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8167, 16334, 32668, 40835, 81670, 89837, 163340, 179674, 359348, 449185, 898370, 988207, 1796740, 1976414, 3952828, 4941035, 9882070, 19764140]

約数ペア:

[(1, 19764140), (2, 9882070), (4, 4941035), (5, 3952828), (10, 1976414), (11, 1796740), (20, 988207), (22, 898370), (44, 449185), (55, 359348), (110, 179674), (121, 163340), (220, 89837), (242, 81670), (484, 40835), (605, 32668), (1210, 16334), (2420, 8167)]