2005242005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{31193}}^1$

素因数の和:31277

約数の個数: 32

約数和(自身を含む): 2767032576

約数和(自身を除く): 761790571

約数列:

[1, 5, 13, 23, 43, 65, 115, 215, 299, 559, 989, 1495, 2795, 4945, 12857, 31193, 64285, 155965, 405509, 717439, 1341299, 2027545, 3587195, 6706495, 9326707, 17436887, 30849877, 46633535, 87184435, 154249385, 401048401, 2005242005]

約数ペア:

[(1, 2005242005), (5, 401048401), (13, 154249385), (23, 87184435), (43, 46633535), (65, 30849877), (115, 17436887), (215, 9326707), (299, 6706495), (559, 3587195), (989, 2027545), (1495, 1341299), (2795, 717439), (4945, 405509), (12857, 155965), (31193, 64285)]