21107031

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27809}}^1$

素因数の和:27846

約数の個数: 16

約数和(自身を含む): 32037120

約数和(自身を除く): 10930089

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27809, 83427, 305899, 639607, 917697, 1918821, 7035677, 21107031]

約数ペア:

[(1, 21107031), (3, 7035677), (11, 1918821), (23, 917697), (33, 639607), (69, 305899), (253, 83427), (759, 27809)]