21112418

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{947}}^1$

素因数の和:1177

約数の個数: 16

約数和(自身を含む): 32353344

約数和(自身を除く): 11240926

約数列:

[1, 2, 71, 142, 157, 314, 947, 1894, 11147, 22294, 67237, 134474, 148679, 297358, 10556209, 21112418]

約数ペア:

[(1, 21112418), (2, 10556209), (71, 297358), (142, 148679), (157, 134474), (314, 67237), (947, 22294), (1894, 11147)]