64642720

素因数分解:

$2^5\times 5^1\times {\mathrm{404017}}^1$

素因数の和:404032

約数の個数: 24

約数和(自身を含む): 152718804

約数和(自身を除く): 88076084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 404017, 808034, 1616068, 2020085, 3232136, 4040170, 6464272, 8080340, 12928544, 16160680, 32321360, 64642720]

約数ペア:

[(1, 64642720), (2, 32321360), (4, 16160680), (5, 12928544), (8, 8080340), (10, 6464272), (16, 4040170), (20, 3232136), (32, 2020085), (40, 1616068), (80, 808034), (160, 404017)]