18388720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4691}}^1$

素因数の和:4718

約数の個数: 60

約数和(自身を含む): 49744584

約数和(自身を除く): 31355864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4691, 9382, 18764, 23455, 32837, 37528, 46910, 65674, 75056, 93820, 131348, 164185, 187640, 229859, 262696, 328370, 375280, 459718, 525392, 656740, 919436, 1149295, 1313480, 1838872, 2298590, 2626960, 3677744, 4597180, 9194360, 18388720]

約数ペア:

[(1, 18388720), (2, 9194360), (4, 4597180), (5, 3677744), (7, 2626960), (8, 2298590), (10, 1838872), (14, 1313480), (16, 1149295), (20, 919436), (28, 656740), (35, 525392), (40, 459718), (49, 375280), (56, 328370), (70, 262696), (80, 229859), (98, 187640), (112, 164185), (140, 131348), (196, 93820), (245, 75056), (280, 65674), (392, 46910), (490, 37528), (560, 32837), (784, 23455), (980, 18764), (1960, 9382), (3920, 4691)]