15998715

素因数分解:

$3^4\times 5^1\times {\mathrm{39503}}^1$

素因数の和:39520

約数の個数: 20

約数和(自身を含む): 28679904

約数和(自身を除く): 12681189

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 39503, 118509, 197515, 355527, 592545, 1066581, 1777635, 3199743, 5332905, 15998715]

約数ペア:

[(1, 15998715), (3, 5332905), (5, 3199743), (9, 1777635), (15, 1066581), (27, 592545), (45, 355527), (81, 197515), (135, 118509), (405, 39503)]