31379480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71317}}^1$

素因数の和:71339

約数の個数: 32

約数和(自身を含む): 77023440

約数和(自身を除く): 45643960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 71317, 142634, 285268, 356585, 570536, 713170, 784487, 1426340, 1568974, 2852680, 3137948, 3922435, 6275896, 7844870, 15689740, 31379480]

約数ペア:

[(1, 31379480), (2, 15689740), (4, 7844870), (5, 6275896), (8, 3922435), (10, 3137948), (11, 2852680), (20, 1568974), (22, 1426340), (40, 784487), (44, 713170), (55, 570536), (88, 356585), (110, 285268), (220, 142634), (440, 71317)]