256880019

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{21563}}^1$

素因数の和:21615

約数の個数: 24

約数和(自身を含む): 394362432

約数和(自身を除く): 137482413

約数列:

[1, 3, 11, 19, 33, 57, 209, 361, 627, 1083, 3971, 11913, 21563, 64689, 237193, 409697, 711579, 1229091, 4506667, 7784243, 13520001, 23352729, 85626673, 256880019]

約数ペア:

[(1, 256880019), (3, 85626673), (11, 23352729), (19, 13520001), (33, 7784243), (57, 4506667), (209, 1229091), (361, 711579), (627, 409697), (1083, 237193), (3971, 64689), (11913, 21563)]