40215280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{10259}}^1$

素因数の和:10286

約数の個数: 60

約数和(自身を含む): 108776520

約数和(自身を除く): 68561240

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, 10259, 20518, 41036, 51295, 71813, 82072, 102590, 143626, 164144, 205180, 287252, 359065, 410360, 502691, 574504, 718130, 820720, 1005382, 1149008, 1436260, 2010764, 2513455, 2872520, 4021528, 5026910, 5745040, 8043056, 10053820, 20107640, 40215280]

約数ペア:

[(1, 40215280), (2, 20107640), (4, 10053820), (5, 8043056), (7, 5745040), (8, 5026910), (10, 4021528), (14, 2872520), (16, 2513455), (20, 2010764), (28, 1436260), (35, 1149008), (40, 1005382), (49, 820720), (56, 718130), (70, 574504), (80, 502691), (98, 410360), (112, 359065), (140, 287252), (196, 205180), (245, 164144), (280, 143626), (392, 102590), (490, 82072), (560, 71813), (784, 51295), (980, 41036), (1960, 20518), (3920, 10259)]