51780213

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1997}}^1$

素因数の和:2113

約数の個数: 24

約数和(自身を含む): 77714208

約数和(自身を除く): 25933995

約数列:

[1, 3, 9, 43, 67, 129, 201, 387, 603, 1997, 2881, 5991, 8643, 17973, 25929, 85871, 133799, 257613, 401397, 772839, 1204191, 5753357, 17260071, 51780213]

約数ペア:

[(1, 51780213), (3, 17260071), (9, 5753357), (43, 1204191), (67, 772839), (129, 401397), (201, 257613), (387, 133799), (603, 85871), (1997, 25929), (2881, 17973), (5991, 8643)]