20706777

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 37285248

約数和(自身を除く): 16578471

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 131, 193, 273, 393, 579, 819, 917, 1179, 1351, 1703, 1737, 2509, 2751, 4053, 5109, 7527, 8253, 11921, 12159, 15327, 17563, 22581, 25283, 35763, 52689, 75849, 107289, 158067, 176981, 227547, 328679, 530943, 986037, 1592829, 2300753, 2958111, 6902259, 20706777]

約数ペア:

[(1, 20706777), (3, 6902259), (7, 2958111), (9, 2300753), (13, 1592829), (21, 986037), (39, 530943), (63, 328679), (91, 227547), (117, 176981), (131, 158067), (193, 107289), (273, 75849), (393, 52689), (579, 35763), (819, 25283), (917, 22581), (1179, 17563), (1351, 15327), (1703, 12159), (1737, 11921), (2509, 8253), (2751, 7527), (4053, 5109)]