21000252005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{19697}}^1$

素因数の和:19925

約数の個数: 32

約数和(自身を含む): 26867441664

約数和(自身を除く): 5867189659

約数列:

[1, 5, 23, 73, 115, 127, 365, 635, 1679, 2921, 8395, 9271, 14605, 19697, 46355, 98485, 213233, 453031, 1066165, 1437881, 2265155, 2501519, 7189405, 12507595, 33071263, 57534937, 165356315, 182610887, 287674685, 913054435, 4200050401, 21000252005]

約数ペア:

[(1, 21000252005), (5, 4200050401), (23, 913054435), (73, 287674685), (115, 182610887), (127, 165356315), (365, 57534937), (635, 33071263), (1679, 12507595), (2921, 7189405), (8395, 2501519), (9271, 2265155), (14605, 1437881), (19697, 1066165), (46355, 453031), (98485, 213233)]