21028916

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{281}}^1\times {\mathrm{353}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 37734984

約数和(自身を除く): 16706068

約数列:

[1, 2, 4, 53, 106, 212, 281, 353, 562, 706, 1124, 1412, 14893, 18709, 29786, 37418, 59572, 74836, 99193, 198386, 396772, 5257229, 10514458, 21028916]

約数ペア:

[(1, 21028916), (2, 10514458), (4, 5257229), (53, 396772), (106, 198386), (212, 99193), (281, 74836), (353, 59572), (562, 37418), (706, 29786), (1124, 18709), (1412, 14893)]