20640330

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2903}}^1$

素因数の和:2995

約数の個数: 48

約数和(自身を含む): 54362880

約数和(自身を除く): 33722550

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 79, 90, 158, 237, 395, 474, 711, 790, 1185, 1422, 2370, 2903, 3555, 5806, 7110, 8709, 14515, 17418, 26127, 29030, 43545, 52254, 87090, 130635, 229337, 261270, 458674, 688011, 1146685, 1376022, 2064033, 2293370, 3440055, 4128066, 6880110, 10320165, 20640330]

約数ペア:

[(1, 20640330), (2, 10320165), (3, 6880110), (5, 4128066), (6, 3440055), (9, 2293370), (10, 2064033), (15, 1376022), (18, 1146685), (30, 688011), (45, 458674), (79, 261270), (90, 229337), (158, 130635), (237, 87090), (395, 52254), (474, 43545), (711, 29030), (790, 26127), (1185, 17418), (1422, 14515), (2370, 8709), (2903, 7110), (3555, 5806)]