20485864

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9887}}^1$

素因数の和:9937

約数の個数: 32

約数和(自身を含む): 45089280

約数和(自身を除く): 24603416

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 296, 518, 1036, 2072, 9887, 19774, 39548, 69209, 79096, 138418, 276836, 365819, 553672, 731638, 1463276, 2560733, 2926552, 5121466, 10242932, 20485864]

約数ペア:

[(1, 20485864), (2, 10242932), (4, 5121466), (7, 2926552), (8, 2560733), (14, 1463276), (28, 731638), (37, 553672), (56, 365819), (74, 276836), (148, 138418), (259, 79096), (296, 69209), (518, 39548), (1036, 19774), (2072, 9887)]