20018757

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{12907}}^1$

素因数の和:12968

約数の個数: 16

約数和(自身を含む): 29740032

約数和(自身を除く): 9721275

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 12907, 38721, 141977, 425931, 606629, 1819887, 6672919, 20018757]

約数ペア:

[(1, 20018757), (3, 6672919), (11, 1819887), (33, 606629), (47, 425931), (141, 141977), (517, 38721), (1551, 12907)]