21161800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9619}}^1$

素因数の和:9646

約数の個数: 48

約数和(自身を含む): 53679600

約数和(自身を除く): 32517800

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, 9619, 19238, 38476, 48095, 76952, 96190, 105809, 192380, 211618, 240475, 384760, 423236, 480950, 529045, 846472, 961900, 1058090, 1923800, 2116180, 2645225, 4232360, 5290450, 10580900, 21161800]

約数ペア:

[(1, 21161800), (2, 10580900), (4, 5290450), (5, 4232360), (8, 2645225), (10, 2116180), (11, 1923800), (20, 1058090), (22, 961900), (25, 846472), (40, 529045), (44, 480950), (50, 423236), (55, 384760), (88, 240475), (100, 211618), (110, 192380), (200, 105809), (220, 96190), (275, 76952), (440, 48095), (550, 38476), (1100, 19238), (2200, 9619)]