401008

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:432

約数の個数: 20

約数和(自身を含む): 790128

約数和(自身を除く): 389120

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 353, 568, 706, 1136, 1412, 2824, 5648, 25063, 50126, 100252, 200504, 401008]

約数ペア:

[(1, 401008), (2, 200504), (4, 100252), (8, 50126), (16, 25063), (71, 5648), (142, 2824), (284, 1412), (353, 1136), (568, 706)]