20154785

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25037}}^1$

素因数の和:25072

約数の個数: 16

約数和(自身を含む): 28843776

約数和(自身を除く): 8688991

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25037, 125185, 175259, 575851, 876295, 2879255, 4030957, 20154785]

約数ペア:

[(1, 20154785), (5, 4030957), (7, 2879255), (23, 876295), (35, 575851), (115, 175259), (161, 125185), (805, 25037)]