19998275525

素因数分解:

$5^2\times {\mathrm{43}}^2\times {\mathrm{89}}^1\times {\mathrm{4861}}^1$

素因数の和:5046

約数の個数: 36

約数和(自身を含む): 25678507140

約数和(自身を除く): 5680231615

約数列:

[1, 5, 25, 43, 89, 215, 445, 1075, 1849, 2225, 3827, 4861, 9245, 19135, 24305, 46225, 95675, 121525, 164561, 209023, 432629, 822805, 1045115, 2163145, 4114025, 5225575, 8987989, 10815725, 18603047, 44939945, 93015235, 224699725, 465076175, 799931021, 3999655105, 19998275525]

約数ペア:

[(1, 19998275525), (5, 3999655105), (25, 799931021), (43, 465076175), (89, 224699725), (215, 93015235), (445, 44939945), (1075, 18603047), (1849, 10815725), (2225, 8987989), (3827, 5225575), (4861, 4114025), (9245, 2163145), (19135, 1045115), (24305, 822805), (46225, 432629), (95675, 209023), (121525, 164561)]