123666640

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3037}}^1$

素因数の和:3559

約数の個数: 40

約数和(自身を含む): 288184680

約数和(自身を除く): 164518040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2545, 3037, 4072, 5090, 6074, 8144, 10180, 12148, 15185, 20360, 24296, 30370, 40720, 48592, 60740, 121480, 242960, 1545833, 3091666, 6183332, 7729165, 12366664, 15458330, 24733328, 30916660, 61833320, 123666640]

約数ペア:

[(1, 123666640), (2, 61833320), (4, 30916660), (5, 24733328), (8, 15458330), (10, 12366664), (16, 7729165), (20, 6183332), (40, 3091666), (80, 1545833), (509, 242960), (1018, 121480), (2036, 60740), (2545, 48592), (3037, 40720), (4072, 30370), (5090, 24296), (6074, 20360), (8144, 15185), (10180, 12148)]