20387295

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:797

約数の個数: 40

約数和(自身を含む): 37113120

約数和(自身を除く): 16725825

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 709, 1065, 1917, 2127, 3195, 3545, 5751, 6381, 9585, 10635, 19143, 28755, 31905, 50339, 57429, 95715, 151017, 251695, 287145, 453051, 755085, 1359153, 2265255, 4077459, 6795765, 20387295]

約数ペア:

[(1, 20387295), (3, 6795765), (5, 4077459), (9, 2265255), (15, 1359153), (27, 755085), (45, 453051), (71, 287145), (81, 251695), (135, 151017), (213, 95715), (355, 57429), (405, 50339), (639, 31905), (709, 28755), (1065, 19143), (1917, 10635), (2127, 9585), (3195, 6381), (3545, 5751)]