21069560

素因数分解:

$2^3\times 5^1\times {\mathrm{526739}}^1$

素因数の和:526750

約数の個数: 16

約数和(自身を含む): 47406600

約数和(自身を除く): 26337040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526739, 1053478, 2106956, 2633695, 4213912, 5267390, 10534780, 21069560]

約数ペア:

[(1, 21069560), (2, 10534780), (4, 5267390), (5, 4213912), (8, 2633695), (10, 2106956), (20, 1053478), (40, 526739)]