20984576

素因数分解:

$2^8\times {\mathrm{81971}}^1$

素因数の和:81987

約数の個数: 18

約数和(自身を含む): 41887692

約数和(自身を除く): 20903116

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 81971, 163942, 327884, 655768, 1311536, 2623072, 5246144, 10492288, 20984576]

約数ペア:

[(1, 20984576), (2, 10492288), (4, 5246144), (8, 2623072), (16, 1311536), (32, 655768), (64, 327884), (128, 163942), (256, 81971)]