19803147

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{251}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 34659072

約数和(自身を除く): 14855925

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 251, 273, 289, 357, 663, 753, 867, 1547, 1757, 2023, 3263, 3757, 4267, 4641, 5271, 6069, 9789, 11271, 12801, 22841, 26299, 29869, 55471, 68523, 72539, 78897, 89607, 166413, 217617, 388297, 507773, 943007, 1164891, 1523319, 2829021, 6601049, 19803147]

約数ペア:

[(1, 19803147), (3, 6601049), (7, 2829021), (13, 1523319), (17, 1164891), (21, 943007), (39, 507773), (51, 388297), (91, 217617), (119, 166413), (221, 89607), (251, 78897), (273, 72539), (289, 68523), (357, 55471), (663, 29869), (753, 26299), (867, 22841), (1547, 12801), (1757, 11271), (2023, 9789), (3263, 6069), (3757, 5271), (4267, 4641)]