39988900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{8161}}^1$

素因数の和:8189

約数の個数: 54

約数和(自身を含む): 100955778

約数和(自身を除く): 60966878

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 8161, 16322, 32644, 40805, 57127, 81610, 114254, 163220, 204025, 228508, 285635, 399889, 408050, 571270, 799778, 816100, 1142540, 1428175, 1599556, 1999445, 2856350, 3998890, 5712700, 7997780, 9997225, 19994450, 39988900]

約数ペア:

[(1, 39988900), (2, 19994450), (4, 9997225), (5, 7997780), (7, 5712700), (10, 3998890), (14, 2856350), (20, 1999445), (25, 1599556), (28, 1428175), (35, 1142540), (49, 816100), (50, 799778), (70, 571270), (98, 408050), (100, 399889), (140, 285635), (175, 228508), (196, 204025), (245, 163220), (350, 114254), (490, 81610), (700, 57127), (980, 40805), (1225, 32644), (2450, 16322), (4900, 8161)]