855396400

素因数分解:

$2^4\times 5^2\times {\mathrm{2138491}}^1$

素因数の和:2138509

約数の個数: 30

約数和(自身を含む): 2055090812

約数和(自身を除く): 1199694412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2138491, 4276982, 8553964, 10692455, 17107928, 21384910, 34215856, 42769820, 53462275, 85539640, 106924550, 171079280, 213849100, 427698200, 855396400]

約数ペア:

[(1, 855396400), (2, 427698200), (4, 213849100), (5, 171079280), (8, 106924550), (10, 85539640), (16, 53462275), (20, 42769820), (25, 34215856), (40, 21384910), (50, 17107928), (80, 10692455), (100, 8553964), (200, 4276982), (400, 2138491)]