20413456

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1879}}^1$

素因数の和:1991

約数の個数: 40

約数和(自身を含む): 45691520

約数和(自身を除く): 25278064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1879, 2716, 3758, 5432, 7516, 10864, 13153, 15032, 26306, 30064, 52612, 105224, 182263, 210448, 364526, 729052, 1275841, 1458104, 2551682, 2916208, 5103364, 10206728, 20413456]

約数ペア:

[(1, 20413456), (2, 10206728), (4, 5103364), (7, 2916208), (8, 2551682), (14, 1458104), (16, 1275841), (28, 729052), (56, 364526), (97, 210448), (112, 182263), (194, 105224), (388, 52612), (679, 30064), (776, 26306), (1358, 15032), (1552, 13153), (1879, 10864), (2716, 7516), (3758, 5432)]