64351640

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{11743}}^1$

素因数の和:11891

約数の個数: 32

約数和(自身を含む): 145860480

約数和(自身を除く): 81508840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 11743, 23486, 46972, 58715, 93944, 117430, 234860, 469720, 1608791, 3217582, 6435164, 8043955, 12870328, 16087910, 32175820, 64351640]

約数ペア:

[(1, 64351640), (2, 32175820), (4, 16087910), (5, 12870328), (8, 8043955), (10, 6435164), (20, 3217582), (40, 1608791), (137, 469720), (274, 234860), (548, 117430), (685, 93944), (1096, 58715), (1370, 46972), (2740, 23486), (5480, 11743)]