257796440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{5801}}^1$

素因数の和:5924

約数の個数: 64

約数和(自身を含む): 639148320

約数和(自身を除く): 381351880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 2020, 2222, 4040, 4444, 5555, 5801, 8888, 11110, 11602, 22220, 23204, 29005, 44440, 46408, 58010, 63811, 116020, 127622, 232040, 255244, 319055, 510488, 585901, 638110, 1171802, 1276220, 2343604, 2552440, 2929505, 4687208, 5859010, 6444911, 11718020, 12889822, 23436040, 25779644, 32224555, 51559288, 64449110, 128898220, 257796440]

約数ペア:

[(1, 257796440), (2, 128898220), (4, 64449110), (5, 51559288), (8, 32224555), (10, 25779644), (11, 23436040), (20, 12889822), (22, 11718020), (40, 6444911), (44, 5859010), (55, 4687208), (88, 2929505), (101, 2552440), (110, 2343604), (202, 1276220), (220, 1171802), (404, 638110), (440, 585901), (505, 510488), (808, 319055), (1010, 255244), (1111, 232040), (2020, 127622), (2222, 116020), (4040, 63811), (4444, 58010), (5555, 46408), (5801, 44440), (8888, 29005), (11110, 23204), (11602, 22220)]