21260000

素因数分解:

$2^5\times 5^4\times {\mathrm{1063}}^1$

素因数の和:1093

約数の個数: 60

約数和(自身を含む): 52351992

約数和(自身を除く): 31091992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1063, 1250, 2000, 2126, 2500, 4000, 4252, 5000, 5315, 8504, 10000, 10630, 17008, 20000, 21260, 26575, 34016, 42520, 53150, 85040, 106300, 132875, 170080, 212600, 265750, 425200, 531500, 664375, 850400, 1063000, 1328750, 2126000, 2657500, 4252000, 5315000, 10630000, 21260000]

約数ペア:

[(1, 21260000), (2, 10630000), (4, 5315000), (5, 4252000), (8, 2657500), (10, 2126000), (16, 1328750), (20, 1063000), (25, 850400), (32, 664375), (40, 531500), (50, 425200), (80, 265750), (100, 212600), (125, 170080), (160, 132875), (200, 106300), (250, 85040), (400, 53150), (500, 42520), (625, 34016), (800, 26575), (1000, 21260), (1063, 20000), (1250, 17008), (2000, 10630), (2126, 10000), (2500, 8504), (4000, 5315), (4252, 5000)]