21693500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1009}}^1$

素因数の和:1071

約数の個数: 48

約数和(自身を含む): 48528480

約数和(自身を除く): 26834980

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 1009, 1075, 2018, 2150, 4036, 4300, 5045, 5375, 10090, 10750, 20180, 21500, 25225, 43387, 50450, 86774, 100900, 126125, 173548, 216935, 252250, 433870, 504500, 867740, 1084675, 2169350, 4338700, 5423375, 10846750, 21693500]

約数ペア:

[(1, 21693500), (2, 10846750), (4, 5423375), (5, 4338700), (10, 2169350), (20, 1084675), (25, 867740), (43, 504500), (50, 433870), (86, 252250), (100, 216935), (125, 173548), (172, 126125), (215, 100900), (250, 86774), (430, 50450), (500, 43387), (860, 25225), (1009, 21500), (1075, 20180), (2018, 10750), (2150, 10090), (4036, 5375), (4300, 5045)]