21778966

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 36827136

約数和(自身を除く): 15048170

約数列:

[1, 2, 11, 22, 71, 73, 142, 146, 191, 382, 781, 803, 1562, 1606, 2101, 4202, 5183, 10366, 13561, 13943, 27122, 27886, 57013, 114026, 149171, 153373, 298342, 306746, 989953, 1979906, 10889483, 21778966]

約数ペア:

[(1, 21778966), (2, 10889483), (11, 1979906), (22, 989953), (71, 306746), (73, 298342), (142, 153373), (146, 149171), (191, 114026), (382, 57013), (781, 27886), (803, 27122), (1562, 13943), (1606, 13561), (2101, 10366), (4202, 5183)]