20391290

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4603}}^1$

素因数の和:5053

約数の個数: 16

約数和(自身を含む): 36795168

約数和(自身を除く): 16403878

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 4603, 9206, 23015, 46030, 2039129, 4078258, 10195645, 20391290]

約数ペア:

[(1, 20391290), (2, 10195645), (5, 4078258), (10, 2039129), (443, 46030), (886, 23015), (2215, 9206), (4430, 4603)]