21855663

素因数分解:

$3^5\times {\mathrm{53}}^1\times {\mathrm{1697}}^1$

素因数の和:1765

約数の個数: 24

約数和(自身を含む): 33375888

約数和(自身を除く): 11520225

約数列:

[1, 3, 9, 27, 53, 81, 159, 243, 477, 1431, 1697, 4293, 5091, 12879, 15273, 45819, 89941, 137457, 269823, 412371, 809469, 2428407, 7285221, 21855663]

約数ペア:

[(1, 21855663), (3, 7285221), (9, 2428407), (27, 809469), (53, 412371), (81, 269823), (159, 137457), (243, 89941), (477, 45819), (1431, 15273), (1697, 12879), (4293, 5091)]