19984228

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6397}}^1$

素因数の和:6483

約数の個数: 24

約数和(自身を含む): 38695104

約数和(自身を除く): 18710876

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6397, 12794, 25588, 70367, 140734, 281468, 454187, 908374, 1816748, 4996057, 9992114, 19984228]

約数ペア:

[(1, 19984228), (2, 9992114), (4, 4996057), (11, 1816748), (22, 908374), (44, 454187), (71, 281468), (142, 140734), (284, 70367), (781, 25588), (1562, 12794), (3124, 6397)]