21299560

素因数分解:

$2^3\times 5^1\times {\mathrm{532489}}^1$

素因数の和:532500

約数の個数: 16

約数和(自身を含む): 47924100

約数和(自身を除く): 26624540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532489, 1064978, 2129956, 2662445, 4259912, 5324890, 10649780, 21299560]

約数ペア:

[(1, 21299560), (2, 10649780), (4, 5324890), (5, 4259912), (8, 2662445), (10, 2129956), (20, 1064978), (40, 532489)]