20640191

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 25740288

約数和(自身を除く): 5100097

約数列:

[1, 11, 13, 37, 47, 83, 143, 407, 481, 517, 611, 913, 1079, 1739, 3071, 3901, 5291, 6721, 11869, 19129, 22607, 33781, 39923, 42911, 50713, 144337, 248677, 439153, 557843, 1587707, 1876381, 20640191]

約数ペア:

[(1, 20640191), (11, 1876381), (13, 1587707), (37, 557843), (47, 439153), (83, 248677), (143, 144337), (407, 50713), (481, 42911), (517, 39923), (611, 33781), (913, 22607), (1079, 19129), (1739, 11869), (3071, 6721), (3901, 5291)]