28731129

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{359}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 45527040

約数和(自身を除く): 16795911

約数列:

[1, 3, 7, 21, 37, 103, 111, 259, 309, 359, 721, 777, 1077, 2163, 2513, 3811, 7539, 11433, 13283, 26677, 36977, 39849, 80031, 92981, 110931, 258839, 278943, 776517, 1368149, 4104447, 9577043, 28731129]

約数ペア:

[(1, 28731129), (3, 9577043), (7, 4104447), (21, 1368149), (37, 776517), (103, 278943), (111, 258839), (259, 110931), (309, 92981), (359, 80031), (721, 39849), (777, 36977), (1077, 26677), (2163, 13283), (2513, 11433), (3811, 7539)]