16540520

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1609}}^1$

素因数の和:1877

約数の個数: 32

約数和(自身を含む): 37384200

約数和(自身を除く): 20843680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1609, 2056, 2570, 3218, 5140, 6436, 8045, 10280, 12872, 16090, 32180, 64360, 413513, 827026, 1654052, 2067565, 3308104, 4135130, 8270260, 16540520]

約数ペア:

[(1, 16540520), (2, 8270260), (4, 4135130), (5, 3308104), (8, 2067565), (10, 1654052), (20, 827026), (40, 413513), (257, 64360), (514, 32180), (1028, 16090), (1285, 12872), (1609, 10280), (2056, 8045), (2570, 6436), (3218, 5140)]