18493979

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 21841920

約数和(自身を除く): 3347941

約数列:

[1, 7, 53, 79, 371, 553, 631, 4187, 4417, 29309, 33443, 49849, 234101, 348943, 2641997, 18493979]

約数ペア:

[(1, 18493979), (7, 2641997), (53, 348943), (79, 234101), (371, 49849), (553, 33443), (631, 29309), (4187, 4417)]