20217654

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{8707}}^1$

素因数の和:8761

約数の個数: 32

約数和(自身を含む): 45978240

約数和(自身を除く): 25760586

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 86, 129, 258, 387, 774, 1161, 2322, 8707, 17414, 26121, 52242, 78363, 156726, 235089, 374401, 470178, 748802, 1123203, 2246406, 3369609, 6739218, 10108827, 20217654]

約数ペア:

[(1, 20217654), (2, 10108827), (3, 6739218), (6, 3369609), (9, 2246406), (18, 1123203), (27, 748802), (43, 470178), (54, 374401), (86, 235089), (129, 156726), (258, 78363), (387, 52242), (774, 26121), (1161, 17414), (2322, 8707)]