20853800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9479}}^1$

素因数の和:9506

約数の個数: 48

約数和(自身を含む): 52898400

約数和(自身を除く): 32044600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9479, 18958, 37916, 47395, 75832, 94790, 104269, 189580, 208538, 236975, 379160, 417076, 473950, 521345, 834152, 947900, 1042690, 1895800, 2085380, 2606725, 4170760, 5213450, 10426900, 20853800]

約数ペア:

[(1, 20853800), (2, 10426900), (4, 5213450), (5, 4170760), (8, 2606725), (10, 2085380), (11, 1895800), (20, 1042690), (22, 947900), (25, 834152), (40, 521345), (44, 473950), (50, 417076), (55, 379160), (88, 236975), (100, 208538), (110, 189580), (200, 104269), (220, 94790), (275, 75832), (440, 47395), (550, 37916), (1100, 18958), (2200, 9479)]