28501865

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 40888320

約数和(自身を除く): 12386455

約数列:

[1, 5, 7, 31, 35, 109, 155, 217, 241, 545, 763, 1085, 1205, 1687, 3379, 3815, 7471, 8435, 16895, 23653, 26269, 37355, 52297, 118265, 131345, 183883, 261485, 814339, 919415, 4071695, 5700373, 28501865]

約数ペア:

[(1, 28501865), (5, 5700373), (7, 4071695), (31, 919415), (35, 814339), (109, 261485), (155, 183883), (217, 131345), (241, 118265), (545, 52297), (763, 37355), (1085, 26269), (1205, 23653), (1687, 16895), (3379, 8435), (3815, 7471)]