21065538025

素因数分解:

$5^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1\times {\mathrm{3167}}^1$

素因数の和:3574

約数の個数: 48

約数和(自身を含む): 30169497600

約数和(自身を除く): 9103959575

約数列:

[1, 5, 7, 25, 35, 175, 191, 199, 955, 995, 1337, 1393, 3167, 4775, 4975, 6685, 6965, 15835, 22169, 33425, 34825, 38009, 79175, 110845, 190045, 266063, 554225, 604897, 630233, 950225, 1330315, 3024485, 3151165, 4234279, 4411631, 6651575, 15122425, 15755825, 21171395, 22058155, 105856975, 110290775, 120374503, 601872515, 842621521, 3009362575, 4213107605, 21065538025]

約数ペア:

[(1, 21065538025), (5, 4213107605), (7, 3009362575), (25, 842621521), (35, 601872515), (175, 120374503), (191, 110290775), (199, 105856975), (955, 22058155), (995, 21171395), (1337, 15755825), (1393, 15122425), (3167, 6651575), (4775, 4411631), (4975, 4234279), (6685, 3151165), (6965, 3024485), (15835, 1330315), (22169, 950225), (33425, 630233), (34825, 604897), (38009, 554225), (79175, 266063), (110845, 190045)]