21586947

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1\times {\mathrm{443}}^1$

素因数の和:922

約数の個数: 16

約数和(自身を含む): 29694720

約数和(自身を除く): 8107773

約数列:

[1, 3, 37, 111, 439, 443, 1317, 1329, 16243, 16391, 48729, 49173, 194477, 583431, 7195649, 21586947]

約数ペア:

[(1, 21586947), (3, 7195649), (37, 583431), (111, 194477), (439, 49173), (443, 48729), (1317, 16391), (1329, 16243)]