28139013

素因数分解:

$3^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1427}}^1$

素因数の和:1753

約数の個数: 24

約数和(自身を含む): 46632768

約数和(自身を除く): 18493755

約数列:

[1, 3, 7, 9, 21, 63, 313, 939, 1427, 2191, 2817, 4281, 6573, 9989, 12843, 19719, 29967, 89901, 446651, 1339953, 3126557, 4019859, 9379671, 28139013]

約数ペア:

[(1, 28139013), (3, 9379671), (7, 4019859), (9, 3126557), (21, 1339953), (63, 446651), (313, 89901), (939, 29967), (1427, 19719), (2191, 12843), (2817, 9989), (4281, 6573)]