21843895

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{3253}}^1$

素因数の和:3354

約数の個数: 16

約数和(自身を含む): 28114560

約数和(自身を除く): 6270665

約数列:

[1, 5, 17, 79, 85, 395, 1343, 3253, 6715, 16265, 55301, 256987, 276505, 1284935, 4368779, 21843895]

約数ペア:

[(1, 21843895), (5, 4368779), (17, 1284935), (79, 276505), (85, 256987), (395, 55301), (1343, 16265), (3253, 6715)]