21286454

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66107}}^1$

素因数の和:66139

約数の個数: 16

約数和(自身を含む): 38078208

約数和(自身を除く): 16791754

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66107, 132214, 462749, 925498, 1520461, 3040922, 10643227, 21286454]

約数ペア:

[(1, 21286454), (2, 10643227), (7, 3040922), (14, 1520461), (23, 925498), (46, 462749), (161, 132214), (322, 66107)]