21493880

素因数分解:

$2^3\times 5^1\times {\mathrm{537347}}^1$

素因数の和:537358

約数の個数: 16

約数和(自身を含む): 48361320

約数和(自身を除く): 26867440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537347, 1074694, 2149388, 2686735, 4298776, 5373470, 10746940, 21493880]

約数ペア:

[(1, 21493880), (2, 10746940), (4, 5373470), (5, 4298776), (8, 2686735), (10, 2149388), (20, 1074694), (40, 537347)]