20178820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43867}}^1$

素因数の和:43899

約数の個数: 24

約数和(自身を含む): 44218944

約数和(自身を除く): 24040124

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43867, 87734, 175468, 219335, 438670, 877340, 1008941, 2017882, 4035764, 5044705, 10089410, 20178820]

約数ペア:

[(1, 20178820), (2, 10089410), (4, 5044705), (5, 4035764), (10, 2017882), (20, 1008941), (23, 877340), (46, 438670), (92, 219335), (115, 175468), (230, 87734), (460, 43867)]