21078404

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{59209}}^1$

素因数の和:59302

約数の個数: 12

約数和(自身を含む): 37302300

約数和(自身を除く): 16223896

約数列:

[1, 2, 4, 89, 178, 356, 59209, 118418, 236836, 5269601, 10539202, 21078404]

約数ペア:

[(1, 21078404), (2, 10539202), (4, 5269601), (89, 236836), (178, 118418), (356, 59209)]