21519501

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{3221}}^1$

素因数の和:3372

約数の個数: 16

約数和(自身を含む): 30621888

約数和(自身を除く): 9102387

約数列:

[1, 3, 17, 51, 131, 393, 2227, 3221, 6681, 9663, 54757, 164271, 421951, 1265853, 7173167, 21519501]

約数ペア:

[(1, 21519501), (3, 7173167), (17, 1265853), (51, 421951), (131, 164271), (393, 54757), (2227, 9663), (3221, 6681)]