21242115

素因数分解:

$3^3\times 5^1\times {\mathrm{157349}}^1$

素因数の和:157363

約数の個数: 16

約数和(自身を含む): 37764000

約数和(自身を除く): 16521885

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157349, 472047, 786745, 1416141, 2360235, 4248423, 7080705, 21242115]

約数ペア:

[(1, 21242115), (3, 7080705), (5, 4248423), (9, 2360235), (15, 1416141), (27, 786745), (45, 472047), (135, 157349)]