128921858

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{20747}}^1$

素因数の和:21001

約数の個数: 16

約数和(自身を含む): 209139840

約数和(自身を除く): 80217982

約数列:

[1, 2, 13, 26, 239, 478, 3107, 6214, 20747, 41494, 269711, 539422, 4958533, 9917066, 64460929, 128921858]

約数ペア:

[(1, 128921858), (2, 64460929), (13, 9917066), (26, 4958533), (239, 539422), (478, 269711), (3107, 41494), (6214, 20747)]