128499119

素因数分解:

$7^4\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:628

約数の個数: 20

約数和(自身を含む): 151590120

約数和(自身を除く): 23091001

約数列:

[1, 7, 49, 109, 343, 491, 763, 2401, 3437, 5341, 24059, 37387, 53519, 168413, 261709, 374633, 1178891, 2622431, 18357017, 128499119]

約数ペア:

[(1, 128499119), (7, 18357017), (49, 2622431), (109, 1178891), (343, 374633), (491, 261709), (763, 168413), (2401, 53519), (3437, 37387), (5341, 24059)]