21009087

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1549}}^1$

素因数の和:1703

約数の個数: 24

約数和(自身を含む): 33368400

約数和(自身を除く): 12359313

約数列:

[1, 3, 9, 11, 33, 99, 137, 411, 1233, 1507, 1549, 4521, 4647, 13563, 13941, 17039, 51117, 153351, 212213, 636639, 1909917, 2334343, 7003029, 21009087]

約数ペア:

[(1, 21009087), (3, 7003029), (9, 2334343), (11, 1909917), (33, 636639), (99, 212213), (137, 153351), (411, 51117), (1233, 17039), (1507, 13941), (1549, 13563), (4521, 4647)]