21283371

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:636

約数の個数: 32

約数和(自身を含む): 33825600

約数和(自身を除く): 12542229

約数列:

[1, 3, 9, 17, 27, 51, 89, 153, 267, 459, 521, 801, 1513, 1563, 2403, 4539, 4689, 8857, 13617, 14067, 26571, 40851, 46369, 79713, 139107, 239139, 417321, 788273, 1251963, 2364819, 7094457, 21283371]

約数ペア:

[(1, 21283371), (3, 7094457), (9, 2364819), (17, 1251963), (27, 788273), (51, 417321), (89, 239139), (153, 139107), (267, 79713), (459, 46369), (521, 40851), (801, 26571), (1513, 14067), (1563, 13617), (2403, 8857), (4539, 4689)]