20817335

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 10632265

約数列:

[1, 5, 7, 11, 35, 55, 77, 139, 385, 389, 695, 973, 1529, 1945, 2723, 4279, 4865, 7645, 10703, 13615, 21395, 29953, 53515, 54071, 149765, 270355, 378497, 594781, 1892485, 2973905, 4163467, 20817335]

約数ペア:

[(1, 20817335), (5, 4163467), (7, 2973905), (11, 1892485), (35, 594781), (55, 378497), (77, 270355), (139, 149765), (385, 54071), (389, 53515), (695, 29953), (973, 21395), (1529, 13615), (1945, 10703), (2723, 7645), (4279, 4865)]