20997633880

素因数分解:

$2^3\times 5^1\times {\mathrm{9803}}^1\times {\mathrm{53549}}^1$

素因数の和:63363

約数の個数: 32

約数和(自身を含む): 47250378000

約数和(自身を除く): 26252744120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9803, 19606, 39212, 49015, 53549, 78424, 98030, 107098, 196060, 214196, 267745, 392120, 428392, 535490, 1070980, 2141960, 524940847, 1049881694, 2099763388, 2624704235, 4199526776, 5249408470, 10498816940, 20997633880]

約数ペア:

[(1, 20997633880), (2, 10498816940), (4, 5249408470), (5, 4199526776), (8, 2624704235), (10, 2099763388), (20, 1049881694), (40, 524940847), (9803, 2141960), (19606, 1070980), (39212, 535490), (49015, 428392), (53549, 392120), (78424, 267745), (98030, 214196), (107098, 196060)]