400003378

素因数分解:

$2^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1\times {\mathrm{2423}}^1$

素因数の和:3041

約数の個数: 16

約数和(自身を含む): 604739520

約数和(自身を除く): 204736142

約数列:

[1, 2, 197, 394, 419, 838, 2423, 4846, 82543, 165086, 477331, 954662, 1015237, 2030474, 200001689, 400003378]

約数ペア:

[(1, 400003378), (2, 200001689), (197, 2030474), (394, 1015237), (419, 954662), (838, 477331), (2423, 165086), (4846, 82543)]