28131507

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3673}}^1$

素因数の和:3739

約数の個数: 24

約数和(自身を含む): 43558944

約数和(自身を除く): 15427437

約数列:

[1, 3, 9, 23, 37, 69, 111, 207, 333, 851, 2553, 3673, 7659, 11019, 33057, 84479, 135901, 253437, 407703, 760311, 1223109, 3125723, 9377169, 28131507]

約数ペア:

[(1, 28131507), (3, 9377169), (9, 3125723), (23, 1223109), (37, 760311), (69, 407703), (111, 253437), (207, 135901), (333, 84479), (851, 33057), (2553, 11019), (3673, 7659)]