19628487

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7817}}^1$

素因数の和:7860

約数の個数: 20

約数和(自身を含む): 30271296

約数和(自身を除く): 10642809

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7817, 23451, 70353, 211059, 242327, 633177, 726981, 2180943, 6542829, 19628487]

約数ペア:

[(1, 19628487), (3, 6542829), (9, 2180943), (27, 726981), (31, 633177), (81, 242327), (93, 211059), (279, 70353), (837, 23451), (2511, 7817)]