20781130

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4691}}^1$

素因数の和:5141

約数の個数: 16

約数和(自身を含む): 37498464

約数和(自身を除く): 16717334

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 4691, 9382, 23455, 46910, 2078113, 4156226, 10390565, 20781130]

約数ペア:

[(1, 20781130), (2, 10390565), (5, 4156226), (10, 2078113), (443, 46910), (886, 23455), (2215, 9382), (4430, 4691)]