20215908717

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{778763}}^1$

素因数の和:779292

約数の個数: 16

約数和(自身を含む): 28596214080

約数和(自身を除く): 8380305363

約数列:

[1, 3, 17, 51, 509, 1527, 8653, 25959, 778763, 2336289, 13238971, 39716913, 396390367, 1189171101, 6738636239, 20215908717]

約数ペア:

[(1, 20215908717), (3, 6738636239), (17, 1189171101), (51, 396390367), (509, 39716913), (1527, 13238971), (8653, 2336289), (25959, 778763)]