1644278320

素因数分解:

$2^4\times 5^1\times {\mathrm{20553479}}^1$

素因数の和:20553492

約数の個数: 20

約数和(自身を含む): 3822947280

約数和(自身を除く): 2178668960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20553479, 41106958, 82213916, 102767395, 164427832, 205534790, 328855664, 411069580, 822139160, 1644278320]

約数ペア:

[(1, 1644278320), (2, 822139160), (4, 411069580), (5, 328855664), (8, 205534790), (10, 164427832), (16, 102767395), (20, 82213916), (40, 41106958), (80, 20553479)]