20218328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3187}}^1$

素因数の和:3267

約数の個数: 32

約数和(自身を含む): 41507760

約数和(自身を除く): 21289432

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3187, 6344, 6374, 12748, 25496, 41431, 82862, 165724, 194407, 331448, 388814, 777628, 1555256, 2527291, 5054582, 10109164, 20218328]

約数ペア:

[(1, 20218328), (2, 10109164), (4, 5054582), (8, 2527291), (13, 1555256), (26, 777628), (52, 388814), (61, 331448), (104, 194407), (122, 165724), (244, 82862), (488, 41431), (793, 25496), (1586, 12748), (3172, 6374), (3187, 6344)]