399956545

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{2789}}^1$

素因数の和:2889

約数の個数: 32

約数和(自身を含む): 530323200

約数和(自身を除く): 130366655

約数列:

[1, 5, 23, 29, 43, 115, 145, 215, 667, 989, 1247, 2789, 3335, 4945, 6235, 13945, 28681, 64147, 80881, 119927, 143405, 320735, 404405, 599635, 1860263, 2758321, 3477883, 9301315, 13791605, 17389415, 79991309, 399956545]

約数ペア:

[(1, 399956545), (5, 79991309), (23, 17389415), (29, 13791605), (43, 9301315), (115, 3477883), (145, 2758321), (215, 1860263), (667, 599635), (989, 404405), (1247, 320735), (2789, 143405), (3335, 119927), (4945, 80881), (6235, 64147), (13945, 28681)]