20097.000000

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1087}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 1175040

約数和(自身を除く): 696760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1087, 2174, 4348, 5435, 8696, 10870, 11957, 21740, 23914, 43480, 47828, 59785, 95656, 119570, 239140, 478280]

約数ペア:

[(1, 478280), (2, 239140), (4, 119570), (5, 95656), (8, 59785), (10, 47828), (11, 43480), (20, 23914), (22, 21740), (40, 11957), (44, 10870), (55, 8696), (88, 5435), (110, 4348), (220, 2174), (440, 1087)]