20540079

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4127}}^1$

素因数の和:4219

約数の個数: 24

約数和(自身を含む): 34344960

約数和(自身を除く): 13804881

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4127, 4977, 12381, 28889, 37143, 86667, 260001, 326033, 978099, 2282231, 2934297, 6846693, 20540079]

約数ペア:

[(1, 20540079), (3, 6846693), (7, 2934297), (9, 2282231), (21, 978099), (63, 326033), (79, 260001), (237, 86667), (553, 37143), (711, 28889), (1659, 12381), (4127, 4977)]