20539940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21851}}^1$

素因数の和:21907

約数の個数: 24

約数和(自身を含む): 44053632

約数和(自身を除く): 23513692

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21851, 43702, 87404, 109255, 218510, 437020, 1026997, 2053994, 4107988, 5134985, 10269970, 20539940]

約数ペア:

[(1, 20539940), (2, 10269970), (4, 5134985), (5, 4107988), (10, 2053994), (20, 1026997), (47, 437020), (94, 218510), (188, 109255), (235, 87404), (470, 43702), (940, 21851)]