20161520

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1669}}^1$

素因数の和:1833

約数の個数: 40

約数和(自身を含む): 47214240

約数和(自身を除く): 27052720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1669, 2416, 3020, 3338, 6040, 6676, 8345, 12080, 13352, 16690, 26704, 33380, 66760, 133520, 252019, 504038, 1008076, 1260095, 2016152, 2520190, 4032304, 5040380, 10080760, 20161520]

約数ペア:

[(1, 20161520), (2, 10080760), (4, 5040380), (5, 4032304), (8, 2520190), (10, 2016152), (16, 1260095), (20, 1008076), (40, 504038), (80, 252019), (151, 133520), (302, 66760), (604, 33380), (755, 26704), (1208, 16690), (1510, 13352), (1669, 12080), (2416, 8345), (3020, 6676), (3338, 6040)]