256830777

素因数分解:

$3^3\times 7^1\times {\mathrm{653}}^1\times {\mathrm{2081}}^1$

素因数の和:2750

約数の個数: 32

約数和(自身を含む): 435720960

約数和(自身を除く): 178890183

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 653, 1959, 2081, 4571, 5877, 6243, 13713, 14567, 17631, 18729, 41139, 43701, 56187, 123417, 131103, 393309, 1358893, 4076679, 9512251, 12230037, 28536753, 36690111, 85610259, 256830777]

約数ペア:

[(1, 256830777), (3, 85610259), (7, 36690111), (9, 28536753), (21, 12230037), (27, 9512251), (63, 4076679), (189, 1358893), (653, 393309), (1959, 131103), (2081, 123417), (4571, 56187), (5877, 43701), (6243, 41139), (13713, 18729), (14567, 17631)]