20939600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4759}}^1$

素因数の和:4788

約数の個数: 60

約数和(自身を含む): 54892320

約数和(自身を除く): 33952720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4759, 9518, 19036, 23795, 38072, 47590, 52349, 76144, 95180, 104698, 118975, 190360, 209396, 237950, 261745, 380720, 418792, 475900, 523490, 837584, 951800, 1046980, 1308725, 1903600, 2093960, 2617450, 4187920, 5234900, 10469800, 20939600]

約数ペア:

[(1, 20939600), (2, 10469800), (4, 5234900), (5, 4187920), (8, 2617450), (10, 2093960), (11, 1903600), (16, 1308725), (20, 1046980), (22, 951800), (25, 837584), (40, 523490), (44, 475900), (50, 418792), (55, 380720), (80, 261745), (88, 237950), (100, 209396), (110, 190360), (176, 118975), (200, 104698), (220, 95180), (275, 76144), (400, 52349), (440, 47590), (550, 38072), (880, 23795), (1100, 19036), (2200, 9518), (4400, 4759)]