21870838

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43223}}^1$

素因数の和:43259

約数の個数: 16

約数和(自身を含む): 37345536

約数和(自身を除く): 15474698

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43223, 86446, 475453, 950906, 994129, 1988258, 10935419, 21870838]

約数ペア:

[(1, 21870838), (2, 10935419), (11, 1988258), (22, 994129), (23, 950906), (46, 475453), (253, 86446), (506, 43223)]