21219080

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10009}}^1$

素因数の和:10073

約数の個数: 32

約数和(自身を含む): 48648600

約数和(自身を除く): 27429520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10009, 20018, 40036, 50045, 80072, 100090, 200180, 400360, 530477, 1060954, 2121908, 2652385, 4243816, 5304770, 10609540, 21219080]

約数ペア:

[(1, 21219080), (2, 10609540), (4, 5304770), (5, 4243816), (8, 2652385), (10, 2121908), (20, 1060954), (40, 530477), (53, 400360), (106, 200180), (212, 100090), (265, 80072), (424, 50045), (530, 40036), (1060, 20018), (2120, 10009)]