256215969

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{3559}}^1$

素因数の和:4005

約数の個数: 24

約数和(自身を含む): 390603200

約数和(自身を除く): 134387231

約数列:

[1, 3, 9, 19, 57, 171, 421, 1263, 3559, 3789, 7999, 10677, 23997, 32031, 67621, 71991, 202863, 608589, 1498339, 4495017, 13485051, 28468441, 85405323, 256215969]

約数ペア:

[(1, 256215969), (3, 85405323), (9, 28468441), (19, 13485051), (57, 4495017), (171, 1498339), (421, 608589), (1263, 202863), (3559, 71991), (3789, 67621), (7999, 32031), (10677, 23997)]