639665715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{192961}}^1$

素因数の和:192999

約数の個数: 32

約数和(自身を含む): 1167034176

約数和(自身を除く): 527368461

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 192961, 578883, 964805, 2508493, 2894415, 3280337, 7525479, 9841011, 12542465, 16401685, 37627395, 42644381, 49205055, 127933143, 213221905, 639665715]

約数ペア:

[(1, 639665715), (3, 213221905), (5, 127933143), (13, 49205055), (15, 42644381), (17, 37627395), (39, 16401685), (51, 12542465), (65, 9841011), (85, 7525479), (195, 3280337), (221, 2894415), (255, 2508493), (663, 964805), (1105, 578883), (3315, 192961)]