280438418

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{269}}^1\times {\mathrm{397}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 460358640

約数和(自身を除く): 179920222

約数列:

[1, 2, 13, 26, 101, 202, 269, 397, 538, 794, 1313, 2626, 3497, 5161, 6994, 10322, 27169, 40097, 54338, 80194, 106793, 213586, 353197, 521261, 706394, 1042522, 1388309, 2776618, 10786093, 21572186, 140219209, 280438418]

約数ペア:

[(1, 280438418), (2, 140219209), (13, 21572186), (26, 10786093), (101, 2776618), (202, 1388309), (269, 1042522), (397, 706394), (538, 521261), (794, 353197), (1313, 213586), (2626, 106793), (3497, 80194), (5161, 54338), (6994, 40097), (10322, 27169)]