21040396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8609}}^1$

素因数の和:8673

約数の個数: 24

約数和(自身を含む): 40501440

約数和(自身を除く): 19461044

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8609, 17218, 34436, 111917, 223834, 404623, 447668, 809246, 1618492, 5260099, 10520198, 21040396]

約数ペア:

[(1, 21040396), (2, 10520198), (4, 5260099), (13, 1618492), (26, 809246), (47, 447668), (52, 404623), (94, 223834), (188, 111917), (611, 34436), (1222, 17218), (2444, 8609)]