20490790

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47653}}^1$

素因数の和:47703

約数の個数: 16

約数和(自身を含む): 37741968

約数和(自身を除く): 17251178

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 47653, 95306, 238265, 476530, 2049079, 4098158, 10245395, 20490790]

約数ペア:

[(1, 20490790), (2, 10245395), (5, 4098158), (10, 2049079), (43, 476530), (86, 238265), (215, 95306), (430, 47653)]