20457668

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{523}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 45072384

約数和(自身を除く): 24614716

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 127, 154, 254, 308, 508, 523, 889, 1046, 1397, 1778, 2092, 2794, 3556, 3661, 5588, 5753, 7322, 9779, 11506, 14644, 19558, 23012, 39116, 40271, 66421, 80542, 132842, 161084, 265684, 464947, 730631, 929894, 1461262, 1859788, 2922524, 5114417, 10228834, 20457668]

約数ペア:

[(1, 20457668), (2, 10228834), (4, 5114417), (7, 2922524), (11, 1859788), (14, 1461262), (22, 929894), (28, 730631), (44, 464947), (77, 265684), (127, 161084), (154, 132842), (254, 80542), (308, 66421), (508, 40271), (523, 39116), (889, 23012), (1046, 19558), (1397, 14644), (1778, 11506), (2092, 9779), (2794, 7322), (3556, 5753), (3661, 5588)]