20107640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10259}}^1$

素因数の和:10284

約数の個数: 48

約数和(自身を含む): 52633800

約数和(自身を除く): 32526160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10259, 20518, 41036, 51295, 71813, 82072, 102590, 143626, 205180, 287252, 359065, 410360, 502691, 574504, 718130, 1005382, 1436260, 2010764, 2513455, 2872520, 4021528, 5026910, 10053820, 20107640]

約数ペア:

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