128021271

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{51229}}^1$

素因数の和:51263

約数の個数: 24

約数和(自身を含む): 210247920

約数和(自身を除く): 82226649

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 51229, 153687, 358603, 870893, 1075809, 2510221, 2612679, 6096251, 7530663, 18288753, 42673757, 128021271]

約数ペア:

[(1, 128021271), (3, 42673757), (7, 18288753), (17, 7530663), (21, 6096251), (49, 2612679), (51, 2510221), (119, 1075809), (147, 870893), (357, 358603), (833, 153687), (2499, 51229)]