821105425

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5743}}^1$

素因数の和:5822

約数の個数: 48

約数和(自身を含む): 1253570560

約数和(自身を除く): 432465135

約数列:

[1, 5, 7, 19, 25, 35, 43, 95, 133, 175, 215, 301, 475, 665, 817, 1075, 1505, 3325, 4085, 5719, 5743, 7525, 20425, 28595, 28715, 40201, 109117, 142975, 143575, 201005, 246949, 545585, 763819, 1005025, 1234745, 1728643, 2727925, 3819095, 4692031, 6173725, 8643215, 19095475, 23460155, 32844217, 43216075, 117300775, 164221085, 821105425]

約数ペア:

[(1, 821105425), (5, 164221085), (7, 117300775), (19, 43216075), (25, 32844217), (35, 23460155), (43, 19095475), (95, 8643215), (133, 6173725), (175, 4692031), (215, 3819095), (301, 2727925), (475, 1728643), (665, 1234745), (817, 1005025), (1075, 763819), (1505, 545585), (3325, 246949), (4085, 201005), (5719, 143575), (5743, 142975), (7525, 109117), (20425, 40201), (28595, 28715)]