28720705

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 38276280

約数和(自身を除く): 9555575

約数列:

[1, 5, 13, 41, 65, 169, 205, 533, 829, 845, 2665, 4145, 6929, 10777, 33989, 34645, 53885, 140101, 169945, 441857, 700505, 2209285, 5744141, 28720705]

約数ペア:

[(1, 28720705), (5, 5744141), (13, 2209285), (41, 700505), (65, 441857), (169, 169945), (205, 140101), (533, 53885), (829, 34645), (845, 33989), (2665, 10777), (4145, 6929)]