646256

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:273

約数の個数: 30

約数和(自身を含む): 1361520

約数和(自身を除く): 715264

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 239, 338, 478, 676, 956, 1352, 1912, 2704, 3107, 3824, 6214, 12428, 24856, 40391, 49712, 80782, 161564, 323128, 646256]

約数ペア:

[(1, 646256), (2, 323128), (4, 161564), (8, 80782), (13, 49712), (16, 40391), (26, 24856), (52, 12428), (104, 6214), (169, 3824), (208, 3107), (239, 2704), (338, 1912), (478, 1352), (676, 956)]