13820840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 34369920

約数和(自身を除く): 20549080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 311, 404, 440, 505, 622, 808, 1010, 1111, 1244, 1555, 2020, 2222, 2488, 3110, 3421, 4040, 4444, 5555, 6220, 6842, 8888, 11110, 12440, 13684, 17105, 22220, 27368, 31411, 34210, 44440, 62822, 68420, 125644, 136840, 157055, 251288, 314110, 345521, 628220, 691042, 1256440, 1382084, 1727605, 2764168, 3455210, 6910420, 13820840]

約数ペア:

[(1, 13820840), (2, 6910420), (4, 3455210), (5, 2764168), (8, 1727605), (10, 1382084), (11, 1256440), (20, 691042), (22, 628220), (40, 345521), (44, 314110), (55, 251288), (88, 157055), (101, 136840), (110, 125644), (202, 68420), (220, 62822), (311, 44440), (404, 34210), (440, 31411), (505, 27368), (622, 22220), (808, 17105), (1010, 13684), (1111, 12440), (1244, 11110), (1555, 8888), (2020, 6842), (2222, 6220), (2488, 5555), (3110, 4444), (3421, 4040)]