21461985

素因数分解:

$3^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{937}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 37313640

約数和(自身を除く): 15851655

約数列:

[1, 3, 5, 9, 15, 45, 509, 937, 1527, 2545, 2811, 4581, 4685, 7635, 8433, 14055, 22905, 42165, 476933, 1430799, 2384665, 4292397, 7153995, 21461985]

約数ペア:

[(1, 21461985), (3, 7153995), (5, 4292397), (9, 2384665), (15, 1430799), (45, 476933), (509, 42165), (937, 22905), (1527, 14055), (2545, 8433), (2811, 7635), (4581, 4685)]