678331840

素因数分解:

$2^6\times 5^1\times {\mathrm{641}}^1\times {\mathrm{3307}}^1$

素因数の和:3965

約数の個数: 56

約数和(自身を含む): 1618286832

約数和(自身を除く): 939954992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 641, 1282, 2564, 3205, 3307, 5128, 6410, 6614, 10256, 12820, 13228, 16535, 20512, 25640, 26456, 33070, 41024, 51280, 52912, 66140, 102560, 105824, 132280, 205120, 211648, 264560, 529120, 1058240, 2119787, 4239574, 8479148, 10598935, 16958296, 21197870, 33916592, 42395740, 67833184, 84791480, 135666368, 169582960, 339165920, 678331840]

約数ペア:

[(1, 678331840), (2, 339165920), (4, 169582960), (5, 135666368), (8, 84791480), (10, 67833184), (16, 42395740), (20, 33916592), (32, 21197870), (40, 16958296), (64, 10598935), (80, 8479148), (160, 4239574), (320, 2119787), (641, 1058240), (1282, 529120), (2564, 264560), (3205, 211648), (3307, 205120), (5128, 132280), (6410, 105824), (6614, 102560), (10256, 66140), (12820, 52912), (13228, 51280), (16535, 41024), (20512, 33070), (25640, 26456)]