20929825

素因数分解:

$5^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{601}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 29859200

約数和(自身を除く): 8929375

約数列:

[1, 5, 7, 25, 35, 175, 199, 601, 995, 1393, 3005, 4207, 4975, 6965, 15025, 21035, 34825, 105175, 119599, 597995, 837193, 2989975, 4185965, 20929825]

約数ペア:

[(1, 20929825), (5, 4185965), (7, 2989975), (25, 837193), (35, 597995), (175, 119599), (199, 105175), (601, 34825), (995, 21035), (1393, 15025), (3005, 6965), (4207, 4975)]