25051820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 54528768

約数和(自身を除く): 29476948

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 137, 164, 205, 223, 274, 410, 446, 548, 685, 820, 892, 1115, 1370, 2230, 2740, 4460, 5617, 9143, 11234, 18286, 22468, 28085, 30551, 36572, 45715, 56170, 61102, 91430, 112340, 122204, 152755, 182860, 305510, 611020, 1252591, 2505182, 5010364, 6262955, 12525910, 25051820]

約数ペア:

[(1, 25051820), (2, 12525910), (4, 6262955), (5, 5010364), (10, 2505182), (20, 1252591), (41, 611020), (82, 305510), (137, 182860), (164, 152755), (205, 122204), (223, 112340), (274, 91430), (410, 61102), (446, 56170), (548, 45715), (685, 36572), (820, 30551), (892, 28085), (1115, 22468), (1370, 18286), (2230, 11234), (2740, 9143), (4460, 5617)]