660675025

素因数分解:

$5^2\times {\mathrm{41}}^2\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:370

約数の個数: 36

約数和(自身を含む): 854608000

約数和(自身を除く): 193932975

約数列:

[1, 5, 25, 41, 79, 199, 205, 395, 995, 1025, 1681, 1975, 3239, 4975, 8159, 8405, 15721, 16195, 40795, 42025, 78605, 80975, 132799, 203975, 334519, 393025, 644561, 663995, 1672595, 3222805, 3319975, 8362975, 16114025, 26427001, 132135005, 660675025]

約数ペア:

[(1, 660675025), (5, 132135005), (25, 26427001), (41, 16114025), (79, 8362975), (199, 3319975), (205, 3222805), (395, 1672595), (995, 663995), (1025, 644561), (1681, 393025), (1975, 334519), (3239, 203975), (4975, 132799), (8159, 80975), (8405, 78605), (15721, 42025), (16195, 40795)]