81316257

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2447}}^1$

素因数の和:2533

約数の個数: 32

約数和(自身を含む): 126904320

約数和(自身を除く): 45588063

約数列:

[1, 3, 11, 19, 33, 53, 57, 159, 209, 583, 627, 1007, 1749, 2447, 3021, 7341, 11077, 26917, 33231, 46493, 80751, 129691, 139479, 389073, 511423, 1426601, 1534269, 2464129, 4279803, 7392387, 27105419, 81316257]

約数ペア:

[(1, 81316257), (3, 27105419), (11, 7392387), (19, 4279803), (33, 2464129), (53, 1534269), (57, 1426601), (159, 511423), (209, 389073), (583, 139479), (627, 129691), (1007, 80751), (1749, 46493), (2447, 33231), (3021, 26917), (7341, 11077)]