21265760

素因数分解:

$2^5\times 5^1\times {\mathrm{132911}}^1$

素因数の和:132926

約数の個数: 24

約数和(自身を含む): 50240736

約数和(自身を除く): 28974976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132911, 265822, 531644, 664555, 1063288, 1329110, 2126576, 2658220, 4253152, 5316440, 10632880, 21265760]

約数ペア:

[(1, 21265760), (2, 10632880), (4, 5316440), (5, 4253152), (8, 2658220), (10, 2126576), (16, 1329110), (20, 1063288), (32, 664555), (40, 531644), (80, 265822), (160, 132911)]