128873164

素因数分解:

$2^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{17909}}^1$

素因数の和:18177

約数の個数: 24

約数和(自身を含む): 258763680

約数和(自身を除く): 129890516

約数列:

[1, 2, 4, 7, 14, 28, 257, 514, 1028, 1799, 3598, 7196, 17909, 35818, 71636, 125363, 250726, 501452, 4602613, 9205226, 18410452, 32218291, 64436582, 128873164]

約数ペア:

[(1, 128873164), (2, 64436582), (4, 32218291), (7, 18410452), (14, 9205226), (28, 4602613), (257, 501452), (514, 250726), (1028, 125363), (1799, 71636), (3598, 35818), (7196, 17909)]