21396620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152833}}^1$

素因数の和:152849

約数の個数: 24

約数和(自身を含む): 51352224

約数和(自身を除く): 29955604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152833, 305666, 611332, 764165, 1069831, 1528330, 2139662, 3056660, 4279324, 5349155, 10698310, 21396620]

約数ペア:

[(1, 21396620), (2, 10698310), (4, 5349155), (5, 4279324), (7, 3056660), (10, 2139662), (14, 1528330), (20, 1069831), (28, 764165), (35, 611332), (70, 305666), (140, 152833)]