81964376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{1249}}^1$

素因数の和:1899

約数の個数: 32

約数和(自身を含む): 165900000

約数和(自身を除く): 83935624

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 631, 1249, 1262, 2498, 2524, 4996, 5048, 8203, 9992, 16237, 16406, 32474, 32812, 64948, 65624, 129896, 788119, 1576238, 3152476, 6304952, 10245547, 20491094, 40982188, 81964376]

約数ペア:

[(1, 81964376), (2, 40982188), (4, 20491094), (8, 10245547), (13, 6304952), (26, 3152476), (52, 1576238), (104, 788119), (631, 129896), (1249, 65624), (1262, 64948), (2498, 32812), (2524, 32474), (4996, 16406), (5048, 16237), (8203, 9992)]