20399410

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43403}}^1$

素因数の和:43457

約数の個数: 16

約数和(自身を含む): 37501056

約数和(自身を除く): 17101646

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 43403, 86806, 217015, 434030, 2039941, 4079882, 10199705, 20399410]

約数ペア:

[(1, 20399410), (2, 10199705), (5, 4079882), (10, 2039941), (47, 434030), (94, 217015), (235, 86806), (470, 43403)]