209214981

素因数分解:

$3^7\times {\mathrm{271}}^1\times {\mathrm{353}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 315824640

約数和(自身を除く): 106609659

約数列:

[1, 3, 9, 27, 81, 243, 271, 353, 729, 813, 1059, 2187, 2439, 3177, 7317, 9531, 21951, 28593, 65853, 85779, 95663, 197559, 257337, 286989, 592677, 772011, 860967, 2582901, 7748703, 23246109, 69738327, 209214981]

約数ペア:

[(1, 209214981), (3, 69738327), (9, 23246109), (27, 7748703), (81, 2582901), (243, 860967), (271, 772011), (353, 592677), (729, 286989), (813, 257337), (1059, 197559), (2187, 95663), (2439, 85779), (3177, 65853), (7317, 28593), (9531, 21951)]