21328480

素因数分解:

$2^5\times 5^1\times {\mathrm{133303}}^1$

素因数の和:133318

約数の個数: 24

約数和(自身を含む): 50388912

約数和(自身を除く): 29060432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133303, 266606, 533212, 666515, 1066424, 1333030, 2132848, 2666060, 4265696, 5332120, 10664240, 21328480]

約数ペア:

[(1, 21328480), (2, 10664240), (4, 5332120), (5, 4265696), (8, 2666060), (10, 2132848), (16, 1333030), (20, 1066424), (32, 666515), (40, 533212), (80, 266606), (160, 133303)]