20206025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 30950400

約数和(自身を除く): 10744375

約数列:

[1, 5, 7, 19, 25, 35, 59, 95, 103, 133, 175, 295, 413, 475, 515, 665, 721, 1121, 1475, 1957, 2065, 2575, 3325, 3605, 5605, 6077, 7847, 9785, 10325, 13699, 18025, 28025, 30385, 39235, 42539, 48925, 68495, 115463, 151925, 196175, 212695, 342475, 577315, 808241, 1063475, 2886575, 4041205, 20206025]

約数ペア:

[(1, 20206025), (5, 4041205), (7, 2886575), (19, 1063475), (25, 808241), (35, 577315), (59, 342475), (95, 212695), (103, 196175), (133, 151925), (175, 115463), (295, 68495), (413, 48925), (475, 42539), (515, 39235), (665, 30385), (721, 28025), (1121, 18025), (1475, 13699), (1957, 10325), (2065, 9785), (2575, 7847), (3325, 6077), (3605, 5605)]