18659764

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{691}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 33675488

約数和(自身を除く): 15015724

約数列:

[1, 2, 4, 43, 86, 157, 172, 314, 628, 691, 1382, 2764, 6751, 13502, 27004, 29713, 59426, 108487, 118852, 216974, 433948, 4664941, 9329882, 18659764]

約数ペア:

[(1, 18659764), (2, 9329882), (4, 4664941), (43, 433948), (86, 216974), (157, 118852), (172, 108487), (314, 59426), (628, 29713), (691, 27004), (1382, 13502), (2764, 6751)]