20687531421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{8630593}}^1$

素因数の和:8630660

約数の個数: 16

約数和(自身を含む): 29827332864

約数和(自身を除く): 9139801443

約数列:

[1, 3, 17, 47, 51, 141, 799, 2397, 8630593, 25891779, 146720081, 405637871, 440160243, 1216913613, 6895843807, 20687531421]

約数ペア:

[(1, 20687531421), (3, 6895843807), (17, 1216913613), (47, 440160243), (51, 405637871), (141, 146720081), (799, 25891779), (2397, 8630593)]