21130160

素因数分解:

$2^4\times 5^1\times {\mathrm{264127}}^1$

素因数の和:264140

約数の個数: 20

約数和(自身を含む): 49127808

約数和(自身を除く): 27997648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264127, 528254, 1056508, 1320635, 2113016, 2641270, 4226032, 5282540, 10565080, 21130160]

約数ペア:

[(1, 21130160), (2, 10565080), (4, 5282540), (5, 4226032), (8, 2641270), (10, 2113016), (16, 1320635), (20, 1056508), (40, 528254), (80, 264127)]