21043930

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20431}}^1$

素因数の和:20541

約数の個数: 16

約数和(自身を含む): 38248704

約数和(自身を除く): 17204774

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20431, 40862, 102155, 204310, 2104393, 4208786, 10521965, 21043930]

約数ペア:

[(1, 21043930), (2, 10521965), (5, 4208786), (10, 2104393), (103, 204310), (206, 102155), (515, 40862), (1030, 20431)]