21505690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{93503}}^1$

素因数の和:93533

約数の個数: 16

約数和(自身を含む): 40393728

約数和(自身を除く): 18888038

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 93503, 187006, 467515, 935030, 2150569, 4301138, 10752845, 21505690]

約数ペア:

[(1, 21505690), (2, 10752845), (5, 4301138), (10, 2150569), (23, 935030), (46, 467515), (115, 187006), (230, 93503)]