18875857

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 25724160

約数和(自身を除く): 6848303

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 173, 763, 1001, 1199, 1211, 1417, 1903, 2249, 8393, 9919, 13321, 15587, 15743, 18857, 24739, 109109, 131999, 173173, 207427, 245141, 1451989, 1715987, 2696551, 18875857]

約数ペア:

[(1, 18875857), (7, 2696551), (11, 1715987), (13, 1451989), (77, 245141), (91, 207427), (109, 173173), (143, 131999), (173, 109109), (763, 24739), (1001, 18857), (1199, 15743), (1211, 15587), (1417, 13321), (1903, 9919), (2249, 8393)]