20404890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20611}}^1$

素因数の和:20635

約数の個数: 48

約数和(自身を含む): 57878496

約数和(自身を除く): 37473606

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 20611, 41222, 61833, 103055, 123666, 185499, 206110, 226721, 309165, 370998, 453442, 618330, 680163, 927495, 1133605, 1360326, 1854990, 2040489, 2267210, 3400815, 4080978, 6801630, 10202445, 20404890]

約数ペア:

[(1, 20404890), (2, 10202445), (3, 6801630), (5, 4080978), (6, 3400815), (9, 2267210), (10, 2040489), (11, 1854990), (15, 1360326), (18, 1133605), (22, 927495), (30, 680163), (33, 618330), (45, 453442), (55, 370998), (66, 309165), (90, 226721), (99, 206110), (110, 185499), (165, 123666), (198, 103055), (330, 61833), (495, 41222), (990, 20611)]