20153991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11779449

約数列:

[1, 3, 11, 13, 33, 39, 109, 143, 327, 429, 431, 1199, 1293, 1417, 3597, 4251, 4741, 5603, 14223, 15587, 16809, 46761, 46979, 61633, 140937, 184899, 516769, 610727, 1550307, 1832181, 6717997, 20153991]

約数ペア:

[(1, 20153991), (3, 6717997), (11, 1832181), (13, 1550307), (33, 610727), (39, 516769), (109, 184899), (143, 140937), (327, 61633), (429, 46979), (431, 46761), (1199, 16809), (1293, 15587), (1417, 14223), (3597, 5603), (4251, 4741)]