12821409

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{2777}}^1$

素因数の和:2811

約数の個数: 24

約数和(自身を含む): 20223840

約数和(自身を除く): 7402431

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 2777, 4617, 8331, 24993, 52763, 74979, 158289, 224937, 474867, 674811, 1424601, 4273803, 12821409]

約数ペア:

[(1, 12821409), (3, 4273803), (9, 1424601), (19, 674811), (27, 474867), (57, 224937), (81, 158289), (171, 74979), (243, 52763), (513, 24993), (1539, 8331), (2777, 4617)]