19915269

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 29583456

約数和(自身を除く): 9668187

約数列:

[1, 3, 11, 33, 83, 121, 249, 363, 661, 913, 1983, 2739, 7271, 10043, 21813, 30129, 54863, 79981, 164589, 239943, 603493, 1810479, 6638423, 19915269]

約数ペア:

[(1, 19915269), (3, 6638423), (11, 1810479), (33, 603493), (83, 239943), (121, 164589), (249, 79981), (363, 54863), (661, 30129), (913, 21813), (1983, 10043), (2739, 7271)]