28889865

素因数分解:

$3^4\times 5^1\times {\mathrm{71333}}^1$

素因数の和:71350

約数の個数: 20

約数和(自身を含む): 51788484

約数和(自身を除く): 22898619

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 71333, 213999, 356665, 641997, 1069995, 1925991, 3209985, 5777973, 9629955, 28889865]

約数ペア:

[(1, 28889865), (3, 9629955), (5, 5777973), (9, 3209985), (15, 1925991), (27, 1069995), (45, 641997), (81, 356665), (135, 213999), (405, 71333)]