128464450

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{12911}}^1$

素因数の和:13122

約数の個数: 24

約数和(自身を含む): 240163200

約数和(自身を除く): 111698750

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 4975, 9950, 12911, 25822, 64555, 129110, 322775, 645550, 2569289, 5138578, 12846445, 25692890, 64232225, 128464450]

約数ペア:

[(1, 128464450), (2, 64232225), (5, 25692890), (10, 12846445), (25, 5138578), (50, 2569289), (199, 645550), (398, 322775), (995, 129110), (1990, 64555), (4975, 25822), (9950, 12911)]