20810225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{227}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 27423840

約数和(自身を除く): 6613615

約数列:

[1, 5, 19, 25, 95, 193, 227, 475, 965, 1135, 3667, 4313, 4825, 5675, 18335, 21565, 43811, 91675, 107825, 219055, 832409, 1095275, 4162045, 20810225]

約数ペア:

[(1, 20810225), (5, 4162045), (19, 1095275), (25, 832409), (95, 219055), (193, 107825), (227, 91675), (475, 43811), (965, 21565), (1135, 18335), (3667, 5675), (4313, 4825)]