25543640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3209}}^1$

素因数の和:3419

約数の個数: 32

約数和(自身を含む): 57780000

約数和(自身を除く): 32236360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3209, 3980, 6418, 7960, 12836, 16045, 25672, 32090, 64180, 128360, 638591, 1277182, 2554364, 3192955, 5108728, 6385910, 12771820, 25543640]

約数ペア:

[(1, 25543640), (2, 12771820), (4, 6385910), (5, 5108728), (8, 3192955), (10, 2554364), (20, 1277182), (40, 638591), (199, 128360), (398, 64180), (796, 32090), (995, 25672), (1592, 16045), (1990, 12836), (3209, 7960), (3980, 6418)]