20212155

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14489}}^1$

素因数の和:14531

約数の個数: 24

約数和(自身を含む): 36167040

約数和(自身を除く): 15954885

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14489, 43467, 72445, 130401, 217335, 449159, 652005, 1347477, 2245795, 4042431, 6737385, 20212155]

約数ペア:

[(1, 20212155), (3, 6737385), (5, 4042431), (9, 2245795), (15, 1347477), (31, 652005), (45, 449159), (93, 217335), (155, 130401), (279, 72445), (465, 43467), (1395, 14489)]