21000800

素因数分解:

$2^5\times 5^2\times {\mathrm{26251}}^1$

素因数の和:26271

約数の個数: 36

約数和(自身を含む): 51270156

約数和(自身を除く): 30269356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26251, 52502, 105004, 131255, 210008, 262510, 420016, 525020, 656275, 840032, 1050040, 1312550, 2100080, 2625100, 4200160, 5250200, 10500400, 21000800]

約数ペア:

[(1, 21000800), (2, 10500400), (4, 5250200), (5, 4200160), (8, 2625100), (10, 2100080), (16, 1312550), (20, 1050040), (25, 840032), (32, 656275), (40, 525020), (50, 420016), (80, 262510), (100, 210008), (160, 131255), (200, 105004), (400, 52502), (800, 26251)]