20121790900

素因数分解:

$2^2\times 5^2\times {\mathrm{5471}}^1\times {\mathrm{36779}}^1$

素因数の和:42264

約数の個数: 36

約数和(自身を含む): 43673454720

約数和(自身を除く): 23551663820

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 5471, 10942, 21884, 27355, 36779, 54710, 73558, 109420, 136775, 147116, 183895, 273550, 367790, 547100, 735580, 919475, 1838950, 3677900, 201217909, 402435818, 804871636, 1006089545, 2012179090, 4024358180, 5030447725, 10060895450, 20121790900]

約数ペア:

[(1, 20121790900), (2, 10060895450), (4, 5030447725), (5, 4024358180), (10, 2012179090), (20, 1006089545), (25, 804871636), (50, 402435818), (100, 201217909), (5471, 3677900), (10942, 1838950), (21884, 919475), (27355, 735580), (36779, 547100), (54710, 367790), (73558, 273550), (109420, 183895), (136775, 147116)]