161871157

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 194344920

約数和(自身を除く): 32473763

約数列:

[1, 7, 41, 49, 197, 287, 409, 1379, 2009, 2863, 8077, 9653, 16769, 20041, 56539, 80573, 117383, 395773, 564011, 821681, 3303493, 3948077, 23124451, 161871157]

約数ペア:

[(1, 161871157), (7, 23124451), (41, 3948077), (49, 3303493), (197, 821681), (287, 564011), (409, 395773), (1379, 117383), (2009, 80573), (2863, 56539), (8077, 20041), (9653, 16769)]