128343887

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2423}}^1$

素因数の和:2507

約数の個数: 24

約数和(自身を含む): 159169536

約数和(自身を除く): 30825649

約数列:

[1, 7, 23, 47, 49, 161, 329, 1081, 1127, 2303, 2423, 7567, 16961, 52969, 55729, 113881, 118727, 390103, 797167, 2619263, 2730721, 5580169, 18334841, 128343887]

約数ペア:

[(1, 128343887), (7, 18334841), (23, 5580169), (47, 2730721), (49, 2619263), (161, 797167), (329, 390103), (1081, 118727), (1127, 113881), (2303, 55729), (2423, 52969), (7567, 16961)]