21416855

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1279}}^1$

素因数の和:1498

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 5954665

約数列:

[1, 5, 17, 85, 197, 985, 1279, 3349, 6395, 16745, 21743, 108715, 251963, 1259815, 4283371, 21416855]

約数ペア:

[(1, 21416855), (5, 4283371), (17, 1259815), (85, 251963), (197, 108715), (985, 21743), (1279, 16745), (3349, 6395)]