128644854

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{641}}^1$

素因数の和:773

約数の個数: 64

約数和(自身を含む): 289916928

約数和(自身を除く): 161272074

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 83, 93, 166, 186, 249, 403, 498, 641, 806, 1079, 1209, 1282, 1923, 2158, 2418, 2573, 3237, 3846, 5146, 6474, 7719, 8333, 15438, 16666, 19871, 24999, 33449, 39742, 49998, 53203, 59613, 66898, 100347, 106406, 119226, 159609, 200694, 258323, 319218, 516646, 691639, 774969, 1383278, 1549938, 1649293, 2074917, 3298586, 4149834, 4947879, 9895758, 21440809, 42881618, 64322427, 128644854]

約数ペア:

[(1, 128644854), (2, 64322427), (3, 42881618), (6, 21440809), (13, 9895758), (26, 4947879), (31, 4149834), (39, 3298586), (62, 2074917), (78, 1649293), (83, 1549938), (93, 1383278), (166, 774969), (186, 691639), (249, 516646), (403, 319218), (498, 258323), (641, 200694), (806, 159609), (1079, 119226), (1209, 106406), (1282, 100347), (1923, 66898), (2158, 59613), (2418, 53203), (2573, 49998), (3237, 39742), (3846, 33449), (5146, 24999), (6474, 19871), (7719, 16666), (8333, 15438)]