20103475

素因数分解:

$5^2\times 7^2\times {\mathrm{16411}}^1$

素因数の和:16435

約数の個数: 18

約数和(自身を含む): 29000004

約数和(自身を除く): 8896529

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 16411, 82055, 114877, 410275, 574385, 804139, 2871925, 4020695, 20103475]

約数ペア:

[(1, 20103475), (5, 4020695), (7, 2871925), (25, 804139), (35, 574385), (49, 410275), (175, 114877), (245, 82055), (1225, 16411)]