21723880

素因数分解:

$2^3\times 5^1\times {\mathrm{543097}}^1$

素因数の和:543108

約数の個数: 16

約数和(自身を含む): 48878820

約数和(自身を除く): 27154940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 543097, 1086194, 2172388, 2715485, 4344776, 5430970, 10861940, 21723880]

約数ペア:

[(1, 21723880), (2, 10861940), (4, 5430970), (5, 4344776), (8, 2715485), (10, 2172388), (20, 1086194), (40, 543097)]