20451310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2089}}^1$

素因数の和:2196

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 20178290

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2089, 4178, 4895, 9790, 10445, 20890, 22979, 45958, 114895, 185921, 229790, 371842, 929605, 1859210, 2045131, 4090262, 10225655, 20451310]

約数ペア:

[(1, 20451310), (2, 10225655), (5, 4090262), (10, 2045131), (11, 1859210), (22, 929605), (55, 371842), (89, 229790), (110, 185921), (178, 114895), (445, 45958), (890, 22979), (979, 20890), (1958, 10445), (2089, 9790), (4178, 4895)]