20286777

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 11582151

約数列:

[1, 3, 7, 21, 83, 103, 113, 249, 309, 339, 581, 721, 791, 1743, 2163, 2373, 8549, 9379, 11639, 25647, 28137, 34917, 59843, 65653, 81473, 179529, 196959, 244419, 966037, 2898111, 6762259, 20286777]

約数ペア:

[(1, 20286777), (3, 6762259), (7, 2898111), (21, 966037), (83, 244419), (103, 196959), (113, 179529), (249, 81473), (309, 65653), (339, 59843), (581, 34917), (721, 28137), (791, 25647), (1743, 11639), (2163, 9379), (2373, 8549)]