20165511219

素因数分解:

$3^1\times 7^1\times {\mathrm{57781}}^1\times {\mathrm{16619}}^1$

素因数の和:74410

約数の個数: 16

約数和(自身を含む): 30730778880

約数和(自身を除く): 10565267661

約数列:

[1, 3, 7, 21, 16619, 49857, 57781, 116333, 173343, 348999, 404467, 1213401, 960262439, 2880787317, 6721837073, 20165511219]

約数ペア:

[(1, 20165511219), (3, 6721837073), (7, 2880787317), (21, 960262439), (16619, 1213401), (49857, 404467), (57781, 348999), (116333, 173343)]