18903760

素因数分解:

$2^4\times 5^1\times {\mathrm{236297}}^1$

素因数の和:236310

約数の個数: 20

約数和(自身を含む): 43951428

約数和(自身を除く): 25047668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236297, 472594, 945188, 1181485, 1890376, 2362970, 3780752, 4725940, 9451880, 18903760]

約数ペア:

[(1, 18903760), (2, 9451880), (4, 4725940), (5, 3780752), (8, 2362970), (10, 1890376), (16, 1181485), (20, 945188), (40, 472594), (80, 236297)]