400002

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{409}}^1$

素因数の和:577

約数の個数: 16

約数和(自身を含む): 806880

約数和(自身を除く): 406878

約数列:

[1, 2, 3, 6, 163, 326, 409, 489, 818, 978, 1227, 2454, 66667, 133334, 200001, 400002]

約数ペア:

[(1, 400002), (2, 200001), (3, 133334), (6, 66667), (163, 2454), (326, 1227), (409, 978), (489, 818)]