20508345

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3187}}^1$

素因数の和:3222

約数の個数: 48

約数和(自身を含む): 41775552

約数和(自身を除く): 21267207

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3187, 6435, 9561, 15935, 28683, 35057, 41431, 47805, 105171, 124293, 143415, 175285, 207155, 315513, 372879, 455741, 525855, 621465, 1367223, 1577565, 1864395, 2278705, 4101669, 6836115, 20508345]

約数ペア:

[(1, 20508345), (3, 6836115), (5, 4101669), (9, 2278705), (11, 1864395), (13, 1577565), (15, 1367223), (33, 621465), (39, 525855), (45, 455741), (55, 372879), (65, 315513), (99, 207155), (117, 175285), (143, 143415), (165, 124293), (195, 105171), (429, 47805), (495, 41431), (585, 35057), (715, 28683), (1287, 15935), (2145, 9561), (3187, 6435)]