990404275

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{10739}}^1$

素因数の和:10804

約数の個数: 48

約数和(自身を含む): 1534187520

約数和(自身を除く): 543783245

約数列:

[1, 5, 7, 17, 25, 31, 35, 85, 119, 155, 175, 217, 425, 527, 595, 775, 1085, 2635, 2975, 3689, 5425, 10739, 13175, 18445, 53695, 75173, 92225, 182563, 268475, 332909, 375865, 912815, 1277941, 1664545, 1879325, 2330363, 4564075, 5659453, 6389705, 8322725, 11651815, 28297265, 31948525, 39616171, 58259075, 141486325, 198080855, 990404275]

約数ペア:

[(1, 990404275), (5, 198080855), (7, 141486325), (17, 58259075), (25, 39616171), (31, 31948525), (35, 28297265), (85, 11651815), (119, 8322725), (155, 6389705), (175, 5659453), (217, 4564075), (425, 2330363), (527, 1879325), (595, 1664545), (775, 1277941), (1085, 912815), (2635, 375865), (2975, 332909), (3689, 268475), (5425, 182563), (10739, 92225), (13175, 75173), (18445, 53695)]