20105887

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:390

約数の個数: 16

約数和(自身を含む): 21915648

約数和(自身を除く): 1809761

約数列:

[1, 23, 31, 163, 173, 713, 3749, 3979, 5053, 5363, 28199, 116219, 123349, 648577, 874169, 20105887]

約数ペア:

[(1, 20105887), (23, 874169), (31, 648577), (163, 123349), (173, 116219), (713, 28199), (3749, 5363), (3979, 5053)]