20404992

素因数分解:

$2^8\times 3^1\times {\mathrm{163}}^2$

素因数の和:345

約数の個数: 54

約数和(自身を含む): 54642252

約数和(自身を除く): 34237260

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 163, 192, 256, 326, 384, 489, 652, 768, 978, 1304, 1956, 2608, 3912, 5216, 7824, 10432, 15648, 20864, 26569, 31296, 41728, 53138, 62592, 79707, 106276, 125184, 159414, 212552, 318828, 425104, 637656, 850208, 1275312, 1700416, 2550624, 3400832, 5101248, 6801664, 10202496, 20404992]

約数ペア:

[(1, 20404992), (2, 10202496), (3, 6801664), (4, 5101248), (6, 3400832), (8, 2550624), (12, 1700416), (16, 1275312), (24, 850208), (32, 637656), (48, 425104), (64, 318828), (96, 212552), (128, 159414), (163, 125184), (192, 106276), (256, 79707), (326, 62592), (384, 53138), (489, 41728), (652, 31296), (768, 26569), (978, 20864), (1304, 15648), (1956, 10432), (2608, 7824), (3912, 5216)]