18881811

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2273}}^1$

素因数の和:2363

約数の個数: 24

約数和(自身を含む): 29798496

約数和(自身を除く): 10916685

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2273, 2769, 6819, 8307, 20457, 29549, 88647, 161383, 265941, 484149, 1452447, 2097979, 6293937, 18881811]

約数ペア:

[(1, 18881811), (3, 6293937), (9, 2097979), (13, 1452447), (39, 484149), (71, 265941), (117, 161383), (213, 88647), (639, 29549), (923, 20457), (2273, 8307), (2769, 6819)]