19786221

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8053}}^1$

素因数の和:8082

約数の個数: 32

約数和(自身を含む): 36081920

約数和(自身を除く): 16295699

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8053, 24159, 56371, 72477, 104689, 169113, 217431, 314067, 507339, 732823, 942201, 1522017, 2198469, 2826603, 6595407, 19786221]

約数ペア:

[(1, 19786221), (3, 6595407), (7, 2826603), (9, 2198469), (13, 1522017), (21, 942201), (27, 732823), (39, 507339), (63, 314067), (91, 217431), (117, 169113), (189, 104689), (273, 72477), (351, 56371), (819, 24159), (2457, 8053)]