20404406

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13063}}^1$

素因数の和:13147

約数の個数: 16

約数和(自身を含む): 33861888

約数和(自身を除く): 13457482

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13063, 26126, 143693, 287386, 927473, 1854946, 10202203, 20404406]

約数ペア:

[(1, 20404406), (2, 10202203), (11, 1854946), (22, 927473), (71, 287386), (142, 143693), (781, 26126), (1562, 13063)]