20457915

素因数分解:

$3^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{2521}}^1$

素因数の和:3070

約数の個数: 16

約数和(自身を含む): 32806176

約数和(自身を除く): 12348261

約数列:

[1, 3, 5, 15, 541, 1623, 2521, 2705, 7563, 8115, 12605, 37815, 1363861, 4091583, 6819305, 20457915]

約数ペア:

[(1, 20457915), (3, 6819305), (5, 4091583), (15, 1363861), (541, 37815), (1623, 12605), (2521, 8115), (2705, 7563)]