20770720

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3019}}^1$

素因数の和:3077

約数の個数: 48

約数和(自身を含む): 50228640

約数和(自身を除く): 29457920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3019, 3440, 6038, 6880, 12076, 15095, 24152, 30190, 48304, 60380, 96608, 120760, 129817, 241520, 259634, 483040, 519268, 649085, 1038536, 1298170, 2077072, 2596340, 4154144, 5192680, 10385360, 20770720]

約数ペア:

[(1, 20770720), (2, 10385360), (4, 5192680), (5, 4154144), (8, 2596340), (10, 2077072), (16, 1298170), (20, 1038536), (32, 649085), (40, 519268), (43, 483040), (80, 259634), (86, 241520), (160, 129817), (172, 120760), (215, 96608), (344, 60380), (430, 48304), (688, 30190), (860, 24152), (1376, 15095), (1720, 12076), (3019, 6880), (3440, 6038)]