20483281

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 6224687

約数列:

[1, 7, 13, 31, 53, 91, 137, 217, 371, 403, 689, 959, 1643, 1781, 2821, 4247, 4823, 7261, 11501, 12467, 21359, 29729, 50827, 55211, 94393, 149513, 225091, 386477, 660751, 1575637, 2926183, 20483281]

約数ペア:

[(1, 20483281), (7, 2926183), (13, 1575637), (31, 660751), (53, 386477), (91, 225091), (137, 149513), (217, 94393), (371, 55211), (403, 50827), (689, 29729), (959, 21359), (1643, 12467), (1781, 11501), (2821, 7261), (4247, 4823)]