64417520

素因数分解:

$2^4\times 5^1\times {\mathrm{805219}}^1$

素因数の和:805232

約数の個数: 20

約数和(自身を含む): 149770920

約数和(自身を除く): 85353400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805219, 1610438, 3220876, 4026095, 6441752, 8052190, 12883504, 16104380, 32208760, 64417520]

約数ペア:

[(1, 64417520), (2, 32208760), (4, 16104380), (5, 12883504), (8, 8052190), (10, 6441752), (16, 4026095), (20, 3220876), (40, 1610438), (80, 805219)]