204749840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 487134000

約数和(自身を除く): 282384160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 149, 178, 193, 298, 356, 386, 445, 596, 712, 745, 772, 890, 965, 1192, 1424, 1490, 1544, 1780, 1930, 2384, 2980, 3088, 3560, 3860, 5960, 7120, 7720, 11920, 13261, 15440, 17177, 26522, 28757, 34354, 53044, 57514, 66305, 68708, 85885, 106088, 115028, 132610, 137416, 143785, 171770, 212176, 230056, 265220, 274832, 287570, 343540, 460112, 530440, 575140, 687080, 1060880, 1150280, 1374160, 2300560, 2559373, 5118746, 10237492, 12796865, 20474984, 25593730, 40949968, 51187460, 102374920, 204749840]

約数ペア:

[(1, 204749840), (2, 102374920), (4, 51187460), (5, 40949968), (8, 25593730), (10, 20474984), (16, 12796865), (20, 10237492), (40, 5118746), (80, 2559373), (89, 2300560), (149, 1374160), (178, 1150280), (193, 1060880), (298, 687080), (356, 575140), (386, 530440), (445, 460112), (596, 343540), (712, 287570), (745, 274832), (772, 265220), (890, 230056), (965, 212176), (1192, 171770), (1424, 143785), (1490, 137416), (1544, 132610), (1780, 115028), (1930, 106088), (2384, 85885), (2980, 68708), (3088, 66305), (3560, 57514), (3860, 53044), (5960, 34354), (7120, 28757), (7720, 26522), (11920, 17177), (13261, 15440)]