257972

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:80

約数の個数: 36

約数和(自身を含む): 547428

約数和(自身を除く): 289456

約数列:

[1, 2, 4, 11, 13, 22, 26, 41, 44, 52, 82, 121, 143, 164, 242, 286, 451, 484, 533, 572, 902, 1066, 1573, 1804, 2132, 3146, 4961, 5863, 6292, 9922, 11726, 19844, 23452, 64493, 128986, 257972]

約数ペア:

[(1, 257972), (2, 128986), (4, 64493), (11, 23452), (13, 19844), (22, 11726), (26, 9922), (41, 6292), (44, 5863), (52, 4961), (82, 3146), (121, 2132), (143, 1804), (164, 1573), (242, 1066), (286, 902), (451, 572), (484, 533)]