21161345

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13103}}^1$

素因数の和:13144

約数の個数: 16

約数和(自身を含む): 28304640

約数和(自身を除く): 7143295

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13103, 65515, 222751, 248957, 1113755, 1244785, 4232269, 21161345]

約数ペア:

[(1, 21161345), (5, 4232269), (17, 1244785), (19, 1113755), (85, 248957), (95, 222751), (323, 65515), (1615, 13103)]