20802883040

素因数分解:

$2^5\times 5^1\times {\mathrm{353}}^1\times {\mathrm{368323}}^1$

素因数の和:368691

約数の個数: 48

約数和(自身を含む): 49286171088

約数和(自身を除く): 28483288048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 353, 706, 1412, 1765, 2824, 3530, 5648, 7060, 11296, 14120, 28240, 56480, 368323, 736646, 1473292, 1841615, 2946584, 3683230, 5893168, 7366460, 11786336, 14732920, 29465840, 58931680, 130018019, 260036038, 520072076, 650090095, 1040144152, 1300180190, 2080288304, 2600360380, 4160576608, 5200720760, 10401441520, 20802883040]

約数ペア:

[(1, 20802883040), (2, 10401441520), (4, 5200720760), (5, 4160576608), (8, 2600360380), (10, 2080288304), (16, 1300180190), (20, 1040144152), (32, 650090095), (40, 520072076), (80, 260036038), (160, 130018019), (353, 58931680), (706, 29465840), (1412, 14732920), (1765, 11786336), (2824, 7366460), (3530, 5893168), (5648, 3683230), (7060, 2946584), (11296, 1841615), (14120, 1473292), (28240, 736646), (56480, 368323)]