28881909

素因数分解:

$3^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{1277}}^1$

素因数の和:1649

約数の個数: 24

約数和(自身を含む): 47848320

約数和(自身を除く): 18966411

約数列:

[1, 3, 7, 9, 21, 63, 359, 1077, 1277, 2513, 3231, 3831, 7539, 8939, 11493, 22617, 26817, 80451, 458443, 1375329, 3209101, 4125987, 9627303, 28881909]

約数ペア:

[(1, 28881909), (3, 9627303), (7, 4125987), (9, 3209101), (21, 1375329), (63, 458443), (359, 80451), (1077, 26817), (1277, 22617), (2513, 11493), (3231, 8939), (3831, 7539)]