20380255

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1613}}^1$

素因数の和:1663

約数の個数: 24

約数和(自身を含む): 29516832

約数和(自身を除く): 9136577

約数列:

[1, 5, 7, 19, 35, 95, 133, 361, 665, 1613, 1805, 2527, 8065, 11291, 12635, 30647, 56455, 153235, 214529, 582293, 1072645, 2911465, 4076051, 20380255]

約数ペア:

[(1, 20380255), (5, 4076051), (7, 2911465), (19, 1072645), (35, 582293), (95, 214529), (133, 153235), (361, 56455), (665, 30647), (1613, 12635), (1805, 11291), (2527, 8065)]