25280717

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 35458560

約数和(自身を除く): 10177843

約数列:

[1, 7, 11, 17, 31, 49, 77, 89, 119, 187, 217, 341, 527, 539, 623, 833, 979, 1309, 1513, 1519, 2387, 2759, 3689, 4361, 5797, 6853, 9163, 10591, 16643, 16709, 19313, 25823, 30349, 40579, 46903, 47971, 74137, 116501, 135191, 212443, 284053, 328321, 515933, 815507, 1487101, 2298247, 3611531, 25280717]

約数ペア:

[(1, 25280717), (7, 3611531), (11, 2298247), (17, 1487101), (31, 815507), (49, 515933), (77, 328321), (89, 284053), (119, 212443), (187, 135191), (217, 116501), (341, 74137), (527, 47971), (539, 46903), (623, 40579), (833, 30349), (979, 25823), (1309, 19313), (1513, 16709), (1519, 16643), (2387, 10591), (2759, 9163), (3689, 6853), (4361, 5797)]