19968156760

素因数分解:

$2^3\times 5^1\times {\mathrm{66041}}^1\times {\mathrm{7559}}^1$

素因数の和:73611

約数の個数: 32

約数和(自身を含む): 44934976800

約数和(自身を除く): 24966820040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7559, 15118, 30236, 37795, 60472, 66041, 75590, 132082, 151180, 264164, 302360, 330205, 528328, 660410, 1320820, 2641640, 499203919, 998407838, 1996815676, 2496019595, 3993631352, 4992039190, 9984078380, 19968156760]

約数ペア:

[(1, 19968156760), (2, 9984078380), (4, 4992039190), (5, 3993631352), (8, 2496019595), (10, 1996815676), (20, 998407838), (40, 499203919), (7559, 2641640), (15118, 1320820), (30236, 660410), (37795, 528328), (60472, 330205), (66041, 302360), (75590, 264164), (132082, 151180)]