215528913

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{66337}}^1$

素因数の和:66381

約数の個数: 18

約数和(自身を含む): 328572114

約数和(自身を除く): 113043201

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 66337, 199011, 597033, 1260403, 3781209, 11343627, 23947657, 71842971, 215528913]

約数ペア:

[(1, 215528913), (3, 71842971), (9, 23947657), (19, 11343627), (57, 3781209), (171, 1260403), (361, 597033), (1083, 199011), (3249, 66337)]