20389518

素因数分解:

$2^1\times 3^2\times {\mathrm{443}}^1\times {\mathrm{2557}}^1$

素因数の和:3008

約数の個数: 24

約数和(自身を含む): 44294328

約数和(自身を除く): 23904810

約数列:

[1, 2, 3, 6, 9, 18, 443, 886, 1329, 2557, 2658, 3987, 5114, 7671, 7974, 15342, 23013, 46026, 1132751, 2265502, 3398253, 6796506, 10194759, 20389518]

約数ペア:

[(1, 20389518), (2, 10194759), (3, 6796506), (6, 3398253), (9, 2265502), (18, 1132751), (443, 46026), (886, 23013), (1329, 15342), (2557, 7974), (2658, 7671), (3987, 5114)]