80705840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:894

約数の個数: 80

約数和(自身を含む): 198871200

約数和(自身を除く): 118165360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 43, 58, 80, 86, 116, 145, 172, 215, 232, 290, 344, 430, 464, 580, 688, 809, 860, 1160, 1247, 1618, 1720, 2320, 2494, 3236, 3440, 4045, 4988, 6235, 6472, 8090, 9976, 12470, 12944, 16180, 19952, 23461, 24940, 32360, 34787, 46922, 49880, 64720, 69574, 93844, 99760, 117305, 139148, 173935, 187688, 234610, 278296, 347870, 375376, 469220, 556592, 695740, 938440, 1008823, 1391480, 1876880, 2017646, 2782960, 4035292, 5044115, 8070584, 10088230, 16141168, 20176460, 40352920, 80705840]

約数ペア:

[(1, 80705840), (2, 40352920), (4, 20176460), (5, 16141168), (8, 10088230), (10, 8070584), (16, 5044115), (20, 4035292), (29, 2782960), (40, 2017646), (43, 1876880), (58, 1391480), (80, 1008823), (86, 938440), (116, 695740), (145, 556592), (172, 469220), (215, 375376), (232, 347870), (290, 278296), (344, 234610), (430, 187688), (464, 173935), (580, 139148), (688, 117305), (809, 99760), (860, 93844), (1160, 69574), (1247, 64720), (1618, 49880), (1720, 46922), (2320, 34787), (2494, 32360), (3236, 24940), (3440, 23461), (4045, 19952), (4988, 16180), (6235, 12944), (6472, 12470), (8090, 9976)]