128871218

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{72481}}^1$

素因数の和:72617

約数の個数: 16

約数和(自身を含む): 222664704

約数和(自身を除く): 93793486

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 72481, 144962, 507367, 1014734, 9205087, 18410174, 64435609, 128871218]

約数ペア:

[(1, 128871218), (2, 64435609), (7, 18410174), (14, 9205087), (127, 1014734), (254, 507367), (889, 144962), (1778, 72481)]