21270914

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 37635840

約数和(自身を除く): 16364926

約数列:

[1, 2, 7, 14, 53, 106, 109, 218, 263, 371, 526, 742, 763, 1526, 1841, 3682, 5777, 11554, 13939, 27878, 28667, 40439, 57334, 80878, 97573, 195146, 200669, 401338, 1519351, 3038702, 10635457, 21270914]

約数ペア:

[(1, 21270914), (2, 10635457), (7, 3038702), (14, 1519351), (53, 401338), (106, 200669), (109, 195146), (218, 97573), (263, 80878), (371, 57334), (526, 40439), (742, 28667), (763, 27878), (1526, 13939), (1841, 11554), (3682, 5777)]