21711520

素因数分解:

$2^5\times 5^1\times {\mathrm{135697}}^1$

素因数の和:135712

約数の個数: 24

約数和(自身を含む): 51293844

約数和(自身を除く): 29582324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135697, 271394, 542788, 678485, 1085576, 1356970, 2171152, 2713940, 4342304, 5427880, 10855760, 21711520]

約数ペア:

[(1, 21711520), (2, 10855760), (4, 5427880), (5, 4342304), (8, 2713940), (10, 2171152), (16, 1356970), (20, 1085576), (32, 678485), (40, 542788), (80, 271394), (160, 135697)]