21870855

素因数分解:

$3^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1303}}^1$

素因数の和:1687

約数の個数: 24

約数和(自身を含む): 38040288

約数和(自身を除く): 16169433

約数列:

[1, 3, 5, 9, 15, 45, 373, 1119, 1303, 1865, 3357, 3909, 5595, 6515, 11727, 16785, 19545, 58635, 486019, 1458057, 2430095, 4374171, 7290285, 21870855]

約数ペア:

[(1, 21870855), (3, 7290285), (5, 4374171), (9, 2430095), (15, 1458057), (45, 486019), (373, 58635), (1119, 19545), (1303, 16785), (1865, 11727), (3357, 6515), (3909, 5595)]