251291230

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:1044

約数の個数: 32

約数和(自身を含む): 457617600

約数和(自身を除く): 206326370

約数列:

[1, 2, 5, 10, 197, 199, 394, 398, 641, 985, 995, 1282, 1970, 1990, 3205, 6410, 39203, 78406, 126277, 127559, 196015, 252554, 255118, 392030, 631385, 637795, 1262770, 1275590, 25129123, 50258246, 125645615, 251291230]

約数ペア:

[(1, 251291230), (2, 125645615), (5, 50258246), (10, 25129123), (197, 1275590), (199, 1262770), (394, 637795), (398, 631385), (641, 392030), (985, 255118), (995, 252554), (1282, 196015), (1970, 127559), (1990, 126277), (3205, 78406), (6410, 39203)]