12940305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 23804928

約数和(自身を除く): 10864623

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 251, 491, 753, 1255, 1473, 1757, 2455, 3437, 3765, 5271, 7365, 8785, 10311, 17185, 26355, 51555, 123241, 369723, 616205, 862687, 1848615, 2588061, 4313435, 12940305]

約数ペア:

[(1, 12940305), (3, 4313435), (5, 2588061), (7, 1848615), (15, 862687), (21, 616205), (35, 369723), (105, 123241), (251, 51555), (491, 26355), (753, 17185), (1255, 10311), (1473, 8785), (1757, 7365), (2455, 5271), (3437, 3765)]