20815150

素因数分解:

$2^1\times 5^2\times {\mathrm{211}}^1\times {\mathrm{1973}}^1$

素因数の和:2196

約数の個数: 24

約数和(自身を含む): 38919384

約数和(自身を除く): 18104234

約数列:

[1, 2, 5, 10, 25, 50, 211, 422, 1055, 1973, 2110, 3946, 5275, 9865, 10550, 19730, 49325, 98650, 416303, 832606, 2081515, 4163030, 10407575, 20815150]

約数ペア:

[(1, 20815150), (2, 10407575), (5, 4163030), (10, 2081515), (25, 832606), (50, 416303), (211, 98650), (422, 49325), (1055, 19730), (1973, 10550), (2110, 9865), (3946, 5275)]