20996906125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{4663}}^1$

素因数の和:4871

約数の個数: 64

約数和(自身を含む): 30069591552

約数和(自身を除く): 9072685427

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 163, 221, 325, 425, 815, 1105, 1625, 2119, 2125, 2771, 4075, 4663, 5525, 10595, 13855, 20375, 23315, 27625, 36023, 52975, 60619, 69275, 79271, 116575, 180115, 264875, 303095, 346375, 396355, 582875, 760069, 900575, 1030523, 1515475, 1981775, 3800345, 4502875, 5152615, 7577375, 9880897, 9908875, 12921173, 19001725, 25763075, 49404485, 64605865, 95008625, 128815375, 167975249, 247022425, 323029325, 839876245, 1235112125, 1615146625, 4199381225, 20996906125]

約数ペア:

[(1, 20996906125), (5, 4199381225), (13, 1615146625), (17, 1235112125), (25, 839876245), (65, 323029325), (85, 247022425), (125, 167975249), (163, 128815375), (221, 95008625), (325, 64605865), (425, 49404485), (815, 25763075), (1105, 19001725), (1625, 12921173), (2119, 9908875), (2125, 9880897), (2771, 7577375), (4075, 5152615), (4663, 4502875), (5525, 3800345), (10595, 1981775), (13855, 1515475), (20375, 1030523), (23315, 900575), (27625, 760069), (36023, 582875), (52975, 396355), (60619, 346375), (69275, 303095), (79271, 264875), (116575, 180115)]