21736240

素因数分解:

$2^4\times 5^1\times {\mathrm{271703}}^1$

素因数の和:271716

約数の個数: 20

約数和(自身を含む): 50536944

約数和(自身を除く): 28800704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271703, 543406, 1086812, 1358515, 2173624, 2717030, 4347248, 5434060, 10868120, 21736240]

約数ペア:

[(1, 21736240), (2, 10868120), (4, 5434060), (5, 4347248), (8, 2717030), (10, 2173624), (16, 1358515), (20, 1086812), (40, 543406), (80, 271703)]