21166245

素因数分解:

$3^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1889}}^1$

素因数の和:1986

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 16936155

約数列:

[1, 3, 5, 9, 15, 27, 45, 83, 135, 249, 415, 747, 1245, 1889, 2241, 3735, 5667, 9445, 11205, 17001, 28335, 51003, 85005, 156787, 255015, 470361, 783935, 1411083, 2351805, 4233249, 7055415, 21166245]

約数ペア:

[(1, 21166245), (3, 7055415), (5, 4233249), (9, 2351805), (15, 1411083), (27, 783935), (45, 470361), (83, 255015), (135, 156787), (249, 85005), (415, 51003), (747, 28335), (1245, 17001), (1889, 11205), (2241, 9445), (3735, 5667)]