1287802280

素因数分解:

$2^3\times 5^1\times {\mathrm{1847}}^1\times {\mathrm{17431}}^1$

素因数の和:19289

約数の個数: 32

約数和(自身を含む): 2899290240

約数和(自身を除く): 1611487960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1847, 3694, 7388, 9235, 14776, 17431, 18470, 34862, 36940, 69724, 73880, 87155, 139448, 174310, 348620, 697240, 32195057, 64390114, 128780228, 160975285, 257560456, 321950570, 643901140, 1287802280]

約数ペア:

[(1, 1287802280), (2, 643901140), (4, 321950570), (5, 257560456), (8, 160975285), (10, 128780228), (20, 64390114), (40, 32195057), (1847, 697240), (3694, 348620), (7388, 174310), (9235, 139448), (14776, 87155), (17431, 73880), (18470, 69724), (34862, 36940)]