12811480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2647}}^1$

素因数の和:2680

約数の個数: 48

約数和(自身を含む): 31696560

約数和(自身を除く): 18885080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 2647, 4840, 5294, 10588, 13235, 21176, 26470, 29117, 52940, 58234, 105880, 116468, 145585, 232936, 291170, 320287, 582340, 640574, 1164680, 1281148, 1601435, 2562296, 3202870, 6405740, 12811480]

約数ペア:

[(1, 12811480), (2, 6405740), (4, 3202870), (5, 2562296), (8, 1601435), (10, 1281148), (11, 1164680), (20, 640574), (22, 582340), (40, 320287), (44, 291170), (55, 232936), (88, 145585), (110, 116468), (121, 105880), (220, 58234), (242, 52940), (440, 29117), (484, 26470), (605, 21176), (968, 13235), (1210, 10588), (2420, 5294), (2647, 4840)]