16661225

素因数分解:

$5^2\times 7^3\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 48

約数和(自身を含む): 25296000

約数和(自身を除く): 8634775

約数列:

[1, 5, 7, 25, 29, 35, 49, 67, 145, 175, 203, 245, 335, 343, 469, 725, 1015, 1225, 1421, 1675, 1715, 1943, 2345, 3283, 5075, 7105, 8575, 9715, 9947, 11725, 13601, 16415, 22981, 35525, 48575, 49735, 68005, 82075, 95207, 114905, 248675, 340025, 476035, 574525, 666449, 2380175, 3332245, 16661225]

約数ペア:

[(1, 16661225), (5, 3332245), (7, 2380175), (25, 666449), (29, 574525), (35, 476035), (49, 340025), (67, 248675), (145, 114905), (175, 95207), (203, 82075), (245, 68005), (335, 49735), (343, 48575), (469, 35525), (725, 22981), (1015, 16415), (1225, 13601), (1421, 11725), (1675, 9947), (1715, 9715), (1943, 8575), (2345, 7105), (3283, 5075)]