64450220

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{7879}}^1$

素因数の和:8297

約数の個数: 24

約数和(自身を含む): 135693600

約数和(自身を除く): 71243380

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 7879, 8180, 15758, 31516, 39395, 78790, 157580, 3222511, 6445022, 12890044, 16112555, 32225110, 64450220]

約数ペア:

[(1, 64450220), (2, 32225110), (4, 16112555), (5, 12890044), (10, 6445022), (20, 3222511), (409, 157580), (818, 78790), (1636, 39395), (2045, 31516), (4090, 15758), (7879, 8180)]