138462520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{991}}^1$

素因数の和:1508

約数の個数: 64

約数和(自身を含む): 357120000

約数和(自身を除く): 218657480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 499, 991, 998, 1982, 1996, 2495, 3493, 3964, 3992, 4955, 4990, 6937, 6986, 7928, 9910, 9980, 13874, 13972, 17465, 19820, 19960, 27748, 27944, 34685, 34930, 39640, 55496, 69370, 69860, 138740, 139720, 277480, 494509, 989018, 1978036, 2472545, 3461563, 3956072, 4945090, 6923126, 9890180, 13846252, 17307815, 19780360, 27692504, 34615630, 69231260, 138462520]

約数ペア:

[(1, 138462520), (2, 69231260), (4, 34615630), (5, 27692504), (7, 19780360), (8, 17307815), (10, 13846252), (14, 9890180), (20, 6923126), (28, 4945090), (35, 3956072), (40, 3461563), (56, 2472545), (70, 1978036), (140, 989018), (280, 494509), (499, 277480), (991, 139720), (998, 138740), (1982, 69860), (1996, 69370), (2495, 55496), (3493, 39640), (3964, 34930), (3992, 34685), (4955, 27944), (4990, 27748), (6937, 19960), (6986, 19820), (7928, 17465), (9910, 13972), (9980, 13874)]