20280765785

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{333209}}^1$

素因数の和:333305

約数の個数: 32

約数和(自身を含む): 29173201920

約数和(自身を除く): 8892436135

約数列:

[1, 5, 7, 35, 37, 47, 185, 235, 259, 329, 1295, 1645, 1739, 8695, 12173, 60865, 333209, 1666045, 2332463, 11662315, 12328733, 15660823, 61643665, 78304115, 86301131, 109625761, 431505655, 548128805, 579450451, 2897252255, 4056153157, 20280765785]

約数ペア:

[(1, 20280765785), (5, 4056153157), (7, 2897252255), (35, 579450451), (37, 548128805), (47, 431505655), (185, 109625761), (235, 86301131), (259, 78304115), (329, 61643665), (1295, 15660823), (1645, 12328733), (1739, 11662315), (8695, 2332463), (12173, 1666045), (60865, 333209)]