20916868

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43943}}^1$

素因数の和:43971

約数の個数: 24

約数和(自身を含む): 44295552

約数和(自身を除く): 23378684

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 43943, 87886, 175772, 307601, 615202, 747031, 1230404, 1494062, 2988124, 5229217, 10458434, 20916868]

約数ペア:

[(1, 20916868), (2, 10458434), (4, 5229217), (7, 2988124), (14, 1494062), (17, 1230404), (28, 747031), (34, 615202), (68, 307601), (119, 175772), (238, 87886), (476, 43943)]