18971415

素因数分解:

$3^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:493

約数の個数: 40

約数和(自身を含む): 34354320

約数和(自身を除く): 15382905

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 139, 337, 405, 417, 695, 1011, 1251, 1685, 2085, 3033, 3753, 5055, 6255, 9099, 11259, 15165, 18765, 27297, 45495, 46843, 56295, 136485, 140529, 234215, 421587, 702645, 1264761, 2107935, 3794283, 6323805, 18971415]

約数ペア:

[(1, 18971415), (3, 6323805), (5, 3794283), (9, 2107935), (15, 1264761), (27, 702645), (45, 421587), (81, 234215), (135, 140529), (139, 136485), (337, 56295), (405, 46843), (417, 45495), (695, 27297), (1011, 18765), (1251, 15165), (1685, 11259), (2085, 9099), (3033, 6255), (3753, 5055)]