72177777

素因数分解:

$3^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{733}}^1$

素因数の和:1270

約数の個数: 32

約数和(自身を含む): 122607360

約数和(自身を除く): 50429583

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 521, 733, 1563, 2199, 3647, 4689, 5131, 6597, 10941, 14067, 15393, 19791, 32823, 46179, 98469, 138537, 381893, 1145679, 2673251, 3437037, 8019753, 10311111, 24059259, 72177777]

約数ペア:

[(1, 72177777), (3, 24059259), (7, 10311111), (9, 8019753), (21, 3437037), (27, 2673251), (63, 1145679), (189, 381893), (521, 138537), (733, 98469), (1563, 46179), (2199, 32823), (3647, 19791), (4689, 15393), (5131, 14067), (6597, 10941)]