20939008

素因数分解:

$2^8\times {\mathrm{263}}^1\times {\mathrm{311}}^1$

素因数の和:590

約数の個数: 36

約数和(自身を含む): 42090048

約数和(自身を除く): 21151040

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 263, 311, 526, 622, 1052, 1244, 2104, 2488, 4208, 4976, 8416, 9952, 16832, 19904, 33664, 39808, 67328, 79616, 81793, 163586, 327172, 654344, 1308688, 2617376, 5234752, 10469504, 20939008]

約数ペア:

[(1, 20939008), (2, 10469504), (4, 5234752), (8, 2617376), (16, 1308688), (32, 654344), (64, 327172), (128, 163586), (256, 81793), (263, 79616), (311, 67328), (526, 39808), (622, 33664), (1052, 19904), (1244, 16832), (2104, 9952), (2488, 8416), (4208, 4976)]