205400715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61961}}^1$

素因数の和:61999

約数の個数: 32

約数和(自身を含む): 374746176

約数和(自身を除く): 169345461

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 61961, 185883, 309805, 805493, 929415, 1053337, 2416479, 3160011, 4027465, 5266685, 12082395, 13693381, 15800055, 41080143, 68466905, 205400715]

約数ペア:

[(1, 205400715), (3, 68466905), (5, 41080143), (13, 15800055), (15, 13693381), (17, 12082395), (39, 5266685), (51, 4027465), (65, 3160011), (85, 2416479), (195, 1053337), (221, 929415), (255, 805493), (663, 309805), (1105, 185883), (3315, 61961)]