21551365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{4721}}^1$

素因数の和:4820

約数の個数: 16

約数和(自身を含む): 28558656

約数和(自身を除く): 7007291

約数列:

[1, 5, 11, 55, 83, 415, 913, 4565, 4721, 23605, 51931, 259655, 391843, 1959215, 4310273, 21551365]

約数ペア:

[(1, 21551365), (5, 4310273), (11, 1959215), (55, 391843), (83, 259655), (415, 51931), (913, 23605), (4565, 4721)]