20974575

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16523025

約数列:

[1, 3, 5, 15, 19, 25, 41, 57, 75, 95, 123, 205, 285, 359, 475, 615, 779, 1025, 1077, 1425, 1795, 2337, 3075, 3895, 5385, 6821, 8975, 11685, 14719, 19475, 20463, 26925, 34105, 44157, 58425, 73595, 102315, 170525, 220785, 279661, 367975, 511575, 838983, 1103925, 1398305, 4194915, 6991525, 20974575]

約数ペア:

[(1, 20974575), (3, 6991525), (5, 4194915), (15, 1398305), (19, 1103925), (25, 838983), (41, 511575), (57, 367975), (75, 279661), (95, 220785), (123, 170525), (205, 102315), (285, 73595), (359, 58425), (475, 44157), (615, 34105), (779, 26925), (1025, 20463), (1077, 19475), (1425, 14719), (1795, 11685), (2337, 8975), (3075, 6821), (3895, 5385)]