661569447

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 1154580480

約数和(自身を除く): 493011033

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 239, 253, 483, 521, 717, 759, 1563, 1673, 1771, 2629, 3647, 5019, 5313, 5497, 5731, 7887, 10941, 11983, 16491, 17193, 18403, 35949, 38479, 40117, 55209, 60467, 83881, 115437, 120351, 124519, 131813, 181401, 251643, 373557, 395439, 423269, 871633, 922691, 1269807, 1369709, 2614899, 2768073, 2863937, 4109127, 8591811, 9587963, 20047559, 28763889, 31503307, 60142677, 94509921, 220523149, 661569447]

約数ペア:

[(1, 661569447), (3, 220523149), (7, 94509921), (11, 60142677), (21, 31503307), (23, 28763889), (33, 20047559), (69, 9587963), (77, 8591811), (161, 4109127), (231, 2863937), (239, 2768073), (253, 2614899), (483, 1369709), (521, 1269807), (717, 922691), (759, 871633), (1563, 423269), (1673, 395439), (1771, 373557), (2629, 251643), (3647, 181401), (5019, 131813), (5313, 124519), (5497, 120351), (5731, 115437), (7887, 83881), (10941, 60467), (11983, 55209), (16491, 40117), (17193, 38479), (18403, 35949)]