21921560

素因数分解:

$2^3\times 5^1\times {\mathrm{548039}}^1$

素因数の和:548050

約数の個数: 16

約数和(自身を含む): 49323600

約数和(自身を除く): 27402040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548039, 1096078, 2192156, 2740195, 4384312, 5480390, 10960780, 21921560]

約数ペア:

[(1, 21921560), (2, 10960780), (4, 5480390), (5, 4384312), (8, 2740195), (10, 2192156), (20, 1096078), (40, 548039)]