25746721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 37134720

約数和(自身を除く): 11387999

約数列:

[1, 7, 11, 13, 17, 77, 89, 91, 119, 143, 187, 221, 289, 623, 979, 1001, 1157, 1309, 1513, 1547, 2023, 2431, 3179, 3757, 6853, 8099, 10591, 12727, 16643, 17017, 19669, 22253, 25721, 26299, 41327, 89089, 116501, 137683, 180047, 216359, 282931, 289289, 334373, 1514513, 1980517, 2340611, 3678103, 25746721]

約数ペア:

[(1, 25746721), (7, 3678103), (11, 2340611), (13, 1980517), (17, 1514513), (77, 334373), (89, 289289), (91, 282931), (119, 216359), (143, 180047), (187, 137683), (221, 116501), (289, 89089), (623, 41327), (979, 26299), (1001, 25721), (1157, 22253), (1309, 19669), (1513, 17017), (1547, 16643), (2023, 12727), (2431, 10591), (3179, 8099), (3757, 6853)]