217328720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{55441}}^1$

素因数の和:55468

約数の個数: 60

約数和(自身を含む): 587796084

約数和(自身を除く): 370467364

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, 55441, 110882, 221764, 277205, 388087, 443528, 554410, 776174, 887056, 1108820, 1552348, 1940435, 2217640, 2716609, 3104696, 3880870, 4435280, 5433218, 6209392, 7761740, 10866436, 13583045, 15523480, 21732872, 27166090, 31046960, 43465744, 54332180, 108664360, 217328720]

約数ペア:

[(1, 217328720), (2, 108664360), (4, 54332180), (5, 43465744), (7, 31046960), (8, 27166090), (10, 21732872), (14, 15523480), (16, 13583045), (20, 10866436), (28, 7761740), (35, 6209392), (40, 5433218), (49, 4435280), (56, 3880870), (70, 3104696), (80, 2716609), (98, 2217640), (112, 1940435), (140, 1552348), (196, 1108820), (245, 887056), (280, 776174), (392, 554410), (490, 443528), (560, 388087), (784, 277205), (980, 221764), (1960, 110882), (3920, 55441)]