16215325

素因数分解:

$5^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 48

約数和(自身を含む): 24601600

約数和(自身を除く): 8386275

約数列:

[1, 5, 7, 25, 31, 35, 49, 61, 155, 175, 217, 245, 305, 343, 427, 775, 1085, 1225, 1519, 1525, 1715, 1891, 2135, 2989, 5425, 7595, 8575, 9455, 10633, 10675, 13237, 14945, 20923, 37975, 47275, 53165, 66185, 74725, 92659, 104615, 265825, 330925, 463295, 523075, 648613, 2316475, 3243065, 16215325]

約数ペア:

[(1, 16215325), (5, 3243065), (7, 2316475), (25, 648613), (31, 523075), (35, 463295), (49, 330925), (61, 265825), (155, 104615), (175, 92659), (217, 74725), (245, 66185), (305, 53165), (343, 47275), (427, 37975), (775, 20923), (1085, 14945), (1225, 13237), (1519, 10675), (1525, 10633), (1715, 9455), (1891, 8575), (2135, 7595), (2989, 5425)]