21918723

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10256637

約数列:

[1, 3, 19, 41, 57, 83, 113, 123, 249, 339, 779, 1577, 2147, 2337, 3403, 4633, 4731, 6441, 9379, 10209, 13899, 28137, 64657, 88027, 178201, 193971, 264081, 384539, 534603, 1153617, 7306241, 21918723]

約数ペア:

[(1, 21918723), (3, 7306241), (19, 1153617), (41, 534603), (57, 384539), (83, 264081), (113, 193971), (123, 178201), (249, 88027), (339, 64657), (779, 28137), (1577, 13899), (2147, 10209), (2337, 9379), (3403, 6441), (4633, 4731)]