1990666880

素因数分解:

$2^7\times 5^1\times {\mathrm{3110417}}^1$

素因数の和:3110436

約数の個数: 32

約数和(自身を含む): 4758939540

約数和(自身を除く): 2768272660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 3110417, 6220834, 12441668, 15552085, 24883336, 31104170, 49766672, 62208340, 99533344, 124416680, 199066688, 248833360, 398133376, 497666720, 995333440, 1990666880]

約数ペア:

[(1, 1990666880), (2, 995333440), (4, 497666720), (5, 398133376), (8, 248833360), (10, 199066688), (16, 124416680), (20, 99533344), (32, 62208340), (40, 49766672), (64, 31104170), (80, 24883336), (128, 15552085), (160, 12441668), (320, 6220834), (640, 3110417)]