21125540

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17903}}^1$

素因数の和:17971

約数の個数: 24

約数和(自身を含む): 45118080

約数和(自身を除く): 23992540

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17903, 35806, 71612, 89515, 179030, 358060, 1056277, 2112554, 4225108, 5281385, 10562770, 21125540]

約数ペア:

[(1, 21125540), (2, 10562770), (4, 5281385), (5, 4225108), (10, 2112554), (20, 1056277), (59, 358060), (118, 179030), (236, 89515), (295, 71612), (590, 35806), (1180, 17903)]