27900775

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 42219520

約数和(自身を除く): 14318745

約数列:

[1, 5, 7, 25, 31, 35, 37, 139, 155, 175, 185, 217, 259, 695, 775, 925, 973, 1085, 1147, 1295, 3475, 4309, 4865, 5143, 5425, 5735, 6475, 8029, 21545, 24325, 25715, 28675, 30163, 36001, 40145, 107725, 128575, 150815, 159433, 180005, 200725, 754075, 797165, 900025, 1116031, 3985825, 5580155, 27900775]

約数ペア:

[(1, 27900775), (5, 5580155), (7, 3985825), (25, 1116031), (31, 900025), (35, 797165), (37, 754075), (139, 200725), (155, 180005), (175, 159433), (185, 150815), (217, 128575), (259, 107725), (695, 40145), (775, 36001), (925, 30163), (973, 28675), (1085, 25715), (1147, 24325), (1295, 21545), (3475, 8029), (4309, 6475), (4865, 5735), (5143, 5425)]