20789654

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 13493866

約数列:

[1, 2, 23, 31, 46, 61, 62, 122, 239, 478, 713, 1403, 1426, 1891, 2806, 3782, 5497, 7409, 10994, 14579, 14818, 29158, 43493, 86986, 170407, 335317, 340814, 451949, 670634, 903898, 10394827, 20789654]

約数ペア:

[(1, 20789654), (2, 10394827), (23, 903898), (31, 670634), (46, 451949), (61, 340814), (62, 335317), (122, 170407), (239, 86986), (478, 43493), (713, 29158), (1403, 14818), (1426, 14579), (1891, 10994), (2806, 7409), (3782, 5497)]