31491640

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{2687}}^1$

素因数の和:2991

約数の個数: 32

約数和(自身を含む): 71124480

約数和(自身を除く): 39632840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 2344, 2687, 2930, 5374, 5860, 10748, 11720, 13435, 21496, 26870, 53740, 107480, 787291, 1574582, 3149164, 3936455, 6298328, 7872910, 15745820, 31491640]

約数ペア:

[(1, 31491640), (2, 15745820), (4, 7872910), (5, 6298328), (8, 3936455), (10, 3149164), (20, 1574582), (40, 787291), (293, 107480), (586, 53740), (1172, 26870), (1465, 21496), (2344, 13435), (2687, 11720), (2930, 10748), (5374, 5860)]