81168836

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:864

約数の個数: 48

約数和(自身を含む): 171816960

約数和(自身を除く): 90648124

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 271, 532, 542, 563, 1084, 1126, 1897, 2252, 3794, 3941, 5149, 7588, 7882, 10298, 10697, 15764, 20596, 21394, 36043, 42788, 72086, 74879, 144172, 149758, 152573, 299516, 305146, 610292, 1068011, 2136022, 2898887, 4272044, 5797774, 11595548, 20292209, 40584418, 81168836]

約数ペア:

[(1, 81168836), (2, 40584418), (4, 20292209), (7, 11595548), (14, 5797774), (19, 4272044), (28, 2898887), (38, 2136022), (76, 1068011), (133, 610292), (266, 305146), (271, 299516), (532, 152573), (542, 149758), (563, 144172), (1084, 74879), (1126, 72086), (1897, 42788), (2252, 36043), (3794, 21394), (3941, 20596), (5149, 15764), (7588, 10697), (7882, 10298)]