21000252699

素因数分解:

$3^6\times {\mathrm{53}}^1\times {\mathrm{367}}^1\times {\mathrm{1481}}^1$

素因数の和:1919

約数の個数: 56

約数和(自身を含む): 32189182272

約数和(自身を除く): 11188929573

約数列:

[1, 3, 9, 27, 53, 81, 159, 243, 367, 477, 729, 1101, 1431, 1481, 3303, 4293, 4443, 9909, 12879, 13329, 19451, 29727, 38637, 39987, 58353, 78493, 89181, 119961, 175059, 235479, 267543, 359883, 525177, 543527, 706437, 1079649, 1575531, 1630581, 2119311, 4726593, 4891743, 6357933, 14179779, 14675229, 19073799, 28806931, 44025687, 57221397, 86420793, 132077061, 259262379, 396231183, 777787137, 2333361411, 7000084233, 21000252699]

約数ペア:

[(1, 21000252699), (3, 7000084233), (9, 2333361411), (27, 777787137), (53, 396231183), (81, 259262379), (159, 132077061), (243, 86420793), (367, 57221397), (477, 44025687), (729, 28806931), (1101, 19073799), (1431, 14675229), (1481, 14179779), (3303, 6357933), (4293, 4891743), (4443, 4726593), (9909, 2119311), (12879, 1630581), (13329, 1575531), (19451, 1079649), (29727, 706437), (38637, 543527), (39987, 525177), (58353, 359883), (78493, 267543), (89181, 235479), (119961, 175059)]