21490760

素因数分解:

$2^3\times 5^1\times {\mathrm{537269}}^1$

素因数の和:537280

約数の個数: 16

約数和(自身を含む): 48354300

約数和(自身を除く): 26863540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537269, 1074538, 2149076, 2686345, 4298152, 5372690, 10745380, 21490760]

約数ペア:

[(1, 21490760), (2, 10745380), (4, 5372690), (5, 4298152), (8, 2686345), (10, 2149076), (20, 1074538), (40, 537269)]