19155729

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 6971631

約数列:

[1, 3, 71, 139, 213, 417, 647, 1941, 9869, 29607, 45937, 89933, 137811, 269799, 6385243, 19155729]

約数ペア:

[(1, 19155729), (3, 6385243), (71, 269799), (139, 137811), (213, 89933), (417, 45937), (647, 29607), (1941, 9869)]