19913571

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 29652480

約数和(自身を除く): 9738909

約数列:

[1, 3, 9, 47, 141, 179, 263, 423, 537, 789, 1611, 2367, 8413, 12361, 25239, 37083, 47077, 75717, 111249, 141231, 423693, 2212619, 6637857, 19913571]

約数ペア:

[(1, 19913571), (3, 6637857), (9, 2212619), (47, 423693), (141, 141231), (179, 111249), (263, 75717), (423, 47077), (537, 37083), (789, 25239), (1611, 12361), (2367, 8413)]