81390056

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 172687680

約数和(自身を除く): 91297624

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 137, 157, 172, 274, 314, 344, 473, 548, 628, 946, 1096, 1256, 1507, 1727, 1892, 3014, 3454, 3784, 5891, 6028, 6751, 6908, 11782, 12056, 13502, 13816, 21509, 23564, 27004, 43018, 47128, 54008, 64801, 74261, 86036, 129602, 148522, 172072, 236599, 259204, 297044, 473198, 518408, 594088, 924887, 946396, 1849774, 1892792, 3699548, 7399096, 10173757, 20347514, 40695028, 81390056]

約数ペア:

[(1, 81390056), (2, 40695028), (4, 20347514), (8, 10173757), (11, 7399096), (22, 3699548), (43, 1892792), (44, 1849774), (86, 946396), (88, 924887), (137, 594088), (157, 518408), (172, 473198), (274, 297044), (314, 259204), (344, 236599), (473, 172072), (548, 148522), (628, 129602), (946, 86036), (1096, 74261), (1256, 64801), (1507, 54008), (1727, 47128), (1892, 43018), (3014, 27004), (3454, 23564), (3784, 21509), (5891, 13816), (6028, 13502), (6751, 12056), (6908, 11782)]