21754815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85313}}^1$

素因数の和:85338

約数の個数: 16

約数和(自身を含む): 36855648

約数和(自身を除く): 15100833

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85313, 255939, 426565, 1279695, 1450321, 4350963, 7251605, 21754815]

約数ペア:

[(1, 21754815), (3, 7251605), (5, 4350963), (15, 1450321), (17, 1279695), (51, 426565), (85, 255939), (255, 85313)]