13220725

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2437}}^1$

素因数の和:2485

約数の個数: 24

約数和(自身を含む): 19347968

約数和(自身を除く): 6127243

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 2437, 5425, 12185, 17059, 60925, 75547, 85295, 377735, 426475, 528829, 1888675, 2644145, 13220725]

約数ペア:

[(1, 13220725), (5, 2644145), (7, 1888675), (25, 528829), (31, 426475), (35, 377735), (155, 85295), (175, 75547), (217, 60925), (775, 17059), (1085, 12185), (2437, 5425)]