399112785

素因数分解:

$3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{21269}}^1$

素因数の和:21422

約数の個数: 32

約数和(自身を含む): 714672000

約数和(自身を除く): 315559215

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139, 417, 695, 1251, 2085, 3753, 6255, 18765, 21269, 63807, 106345, 191421, 319035, 574263, 957105, 2871315, 2956391, 8869173, 14781955, 26607519, 44345865, 79822557, 133037595, 399112785]

約数ペア:

[(1, 399112785), (3, 133037595), (5, 79822557), (9, 44345865), (15, 26607519), (27, 14781955), (45, 8869173), (135, 2956391), (139, 2871315), (417, 957105), (695, 574263), (1251, 319035), (2085, 191421), (3753, 106345), (6255, 63807), (18765, 21269)]