20428615

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1583}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 25660800

約数和(自身を除く): 5232185

約数列:

[1, 5, 29, 89, 145, 445, 1583, 2581, 7915, 12905, 45907, 140887, 229535, 704435, 4085723, 20428615]

約数ペア:

[(1, 20428615), (5, 4085723), (29, 704435), (89, 229535), (145, 140887), (445, 45907), (1583, 12905), (2581, 7915)]