20480336

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:459

約数の個数: 40

約数和(自身を含む): 41378304

約数和(自身を除く): 20897968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 157, 248, 263, 314, 496, 526, 628, 1052, 1256, 2104, 2512, 4208, 4867, 8153, 9734, 16306, 19468, 32612, 38936, 41291, 65224, 77872, 82582, 130448, 165164, 330328, 660656, 1280021, 2560042, 5120084, 10240168, 20480336]

約数ペア:

[(1, 20480336), (2, 10240168), (4, 5120084), (8, 2560042), (16, 1280021), (31, 660656), (62, 330328), (124, 165164), (157, 130448), (248, 82582), (263, 77872), (314, 65224), (496, 41291), (526, 38936), (628, 32612), (1052, 19468), (1256, 16306), (2104, 9734), (2512, 8153), (4208, 4867)]