21316635

素因数分解:

$3^3\times 5^1\times {\mathrm{157901}}^1$

素因数の和:157915

約数の個数: 16

約数和(自身を含む): 37896480

約数和(自身を除く): 16579845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157901, 473703, 789505, 1421109, 2368515, 4263327, 7105545, 21316635]

約数ペア:

[(1, 21316635), (3, 7105545), (5, 4263327), (9, 2368515), (15, 1421109), (27, 789505), (45, 473703), (135, 157901)]