20915230

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4093}}^1$

素因数の和:4180

約数の個数: 32

約数和(自身を含む): 43625664

約数和(自身を除く): 22710434

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4093, 5110, 8186, 20465, 28651, 40930, 57302, 143255, 286510, 298789, 597578, 1493945, 2091523, 2987890, 4183046, 10457615, 20915230]

約数ペア:

[(1, 20915230), (2, 10457615), (5, 4183046), (7, 2987890), (10, 2091523), (14, 1493945), (35, 597578), (70, 298789), (73, 286510), (146, 143255), (365, 57302), (511, 40930), (730, 28651), (1022, 20465), (2555, 8186), (4093, 5110)]