21680418

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{50893}}^1$

素因数の和:50969

約数の個数: 16

約数和(自身を含む): 43972416

約数和(自身を除く): 22291998

約数列:

[1, 2, 3, 6, 71, 142, 213, 426, 50893, 101786, 152679, 305358, 3613403, 7226806, 10840209, 21680418]

約数ペア:

[(1, 21680418), (2, 10840209), (3, 7226806), (6, 3613403), (71, 305358), (142, 152679), (213, 101786), (426, 50893)]