19948280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45337}}^1$

素因数の和:45359

約数の個数: 32

約数和(自身を含む): 48965040

約数和(自身を除く): 29016760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45337, 90674, 181348, 226685, 362696, 453370, 498707, 906740, 997414, 1813480, 1994828, 2493535, 3989656, 4987070, 9974140, 19948280]

約数ペア:

[(1, 19948280), (2, 9974140), (4, 4987070), (5, 3989656), (8, 2493535), (10, 1994828), (11, 1813480), (20, 997414), (22, 906740), (40, 498707), (44, 453370), (55, 362696), (88, 226685), (110, 181348), (220, 90674), (440, 45337)]