13720945

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 20275200

約数和(自身を除く): 6554255

約数列:

[1, 5, 7, 19, 35, 47, 95, 133, 235, 329, 439, 665, 893, 1645, 2195, 3073, 4465, 6251, 8341, 15365, 20633, 31255, 41705, 58387, 103165, 144431, 291935, 392027, 722155, 1960135, 2744189, 13720945]

約数ペア:

[(1, 13720945), (5, 2744189), (7, 1960135), (19, 722155), (35, 392027), (47, 291935), (95, 144431), (133, 103165), (235, 58387), (329, 41705), (439, 31255), (665, 20633), (893, 15365), (1645, 8341), (2195, 6251), (3073, 4465)]