21297005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13187}}^1$

素因数の和:13228

約数の個数: 16

約数和(自身を含む): 28486080

約数和(自身を除く): 7189075

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13187, 65935, 224179, 250553, 1120895, 1252765, 4259401, 21297005]

約数ペア:

[(1, 21297005), (5, 4259401), (17, 1252765), (19, 1120895), (85, 250553), (95, 224179), (323, 65935), (1615, 13187)]