21609500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3929}}^1$

素因数の和:3959

約数の個数: 48

約数和(自身を含む): 51498720

約数和(自身を除く): 29889220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3929, 5500, 7858, 15716, 19645, 39290, 43219, 78580, 86438, 98225, 172876, 196450, 216095, 392900, 432190, 491125, 864380, 982250, 1080475, 1964500, 2160950, 4321900, 5402375, 10804750, 21609500]

約数ペア:

[(1, 21609500), (2, 10804750), (4, 5402375), (5, 4321900), (10, 2160950), (11, 1964500), (20, 1080475), (22, 982250), (25, 864380), (44, 491125), (50, 432190), (55, 392900), (100, 216095), (110, 196450), (125, 172876), (220, 98225), (250, 86438), (275, 78580), (500, 43219), (550, 39290), (1100, 19645), (1375, 15716), (2750, 7858), (3929, 5500)]