20128790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9631}}^1$

素因数の和:9668

約数の個数: 32

約数和(自身を含む): 41610240

約数和(自身を除く): 21481450

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 9631, 19262, 48155, 96310, 105941, 182989, 211882, 365978, 529705, 914945, 1059410, 1829890, 2012879, 4025758, 10064395, 20128790]

約数ペア:

[(1, 20128790), (2, 10064395), (5, 4025758), (10, 2012879), (11, 1829890), (19, 1059410), (22, 914945), (38, 529705), (55, 365978), (95, 211882), (110, 182989), (190, 105941), (209, 96310), (418, 48155), (1045, 19262), (2090, 9631)]