21000391640

素因数分解:

$2^3\times 5^1\times {\mathrm{525009791}}^1$

素因数の和:525009802

約数の個数: 16

約数和(自身を含む): 47250881280

約数和(自身を除く): 26250489640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525009791, 1050019582, 2100039164, 2625048955, 4200078328, 5250097910, 10500195820, 21000391640]

約数ペア:

[(1, 21000391640), (2, 10500195820), (4, 5250097910), (5, 4200078328), (8, 2625048955), (10, 2100039164), (20, 1050019582), (40, 525009791)]