21894740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3637}}^1$

素因数の和:3696

約数の個数: 48

約数和(自身を含む): 53784192

約数和(自身を除く): 31889452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3637, 6020, 7274, 14548, 18185, 25459, 36370, 50918, 72740, 101836, 127295, 156391, 254590, 312782, 509180, 625564, 781955, 1094737, 1563910, 2189474, 3127820, 4378948, 5473685, 10947370, 21894740]

約数ペア:

[(1, 21894740), (2, 10947370), (4, 5473685), (5, 4378948), (7, 3127820), (10, 2189474), (14, 1563910), (20, 1094737), (28, 781955), (35, 625564), (43, 509180), (70, 312782), (86, 254590), (140, 156391), (172, 127295), (215, 101836), (301, 72740), (430, 50918), (602, 36370), (860, 25459), (1204, 18185), (1505, 14548), (3010, 7274), (3637, 6020)]