9989005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{643}}^1$

素因数の和:900

約数の個数: 16

約数和(自身を含む): 12983040

約数和(自身を除く): 2994035

約数列:

[1, 5, 13, 65, 239, 643, 1195, 3107, 3215, 8359, 15535, 41795, 153677, 768385, 1997801, 9989005]

約数ペア:

[(1, 9989005), (5, 1997801), (13, 768385), (65, 153677), (239, 41795), (643, 15535), (1195, 8359), (3107, 3215)]