19863415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2137}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 28170288

約数和(自身を除く): 8306873

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 2137, 9295, 10685, 23507, 27781, 117535, 138905, 305591, 361153, 1527955, 1805765, 3972683, 19863415]

約数ペア:

[(1, 19863415), (5, 3972683), (11, 1805765), (13, 1527955), (55, 361153), (65, 305591), (143, 138905), (169, 117535), (715, 27781), (845, 23507), (1859, 10685), (2137, 9295)]