256215057

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{33797}}^1$

素因数の和:33845

約数の個数: 24

約数和(自身を含む): 412065216

約数和(自身を除く): 155850159

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 33797, 101391, 236579, 642143, 709737, 1926429, 4495001, 12200717, 13485003, 36602151, 85405019, 256215057]

約数ペア:

[(1, 256215057), (3, 85405019), (7, 36602151), (19, 13485003), (21, 12200717), (57, 4495001), (133, 1926429), (361, 709737), (399, 642143), (1083, 236579), (2527, 101391), (7581, 33797)]