21090597987

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2087}}^1\times {\mathrm{10429}}^1$

素因数の和:12555

約数の個数: 32

約数和(自身を含む): 31360089600

約数和(自身を除く): 10269491613

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 2087, 6261, 10429, 31287, 35479, 39653, 106437, 118959, 177293, 198151, 531879, 594453, 674101, 2022303, 3368567, 10105701, 21765323, 65295969, 370010491, 413541137, 1110031473, 1240623411, 7030199329, 21090597987]

約数ペア:

[(1, 21090597987), (3, 7030199329), (17, 1240623411), (19, 1110031473), (51, 413541137), (57, 370010491), (323, 65295969), (969, 21765323), (2087, 10105701), (6261, 3368567), (10429, 2022303), (31287, 674101), (35479, 594453), (39653, 531879), (106437, 198151), (118959, 177293)]