20121057

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{563}}^1$

素因数の和:618

約数の個数: 36

約数和(自身を含む): 33521904

約数和(自身を除く): 13400847

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 361, 563, 627, 1083, 1689, 1881, 3249, 3971, 5067, 6193, 10697, 11913, 18579, 32091, 35739, 55737, 96273, 117667, 203243, 353001, 609729, 1059003, 1829187, 2235673, 6707019, 20121057]

約数ペア:

[(1, 20121057), (3, 6707019), (9, 2235673), (11, 1829187), (19, 1059003), (33, 609729), (57, 353001), (99, 203243), (171, 117667), (209, 96273), (361, 55737), (563, 35739), (627, 32091), (1083, 18579), (1689, 11913), (1881, 10697), (3249, 6193), (3971, 5067)]