642364.0000000

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 7495488

約数和(自身を除く): 4307468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 337, 430, 473, 674, 860, 946, 1348, 1685, 1892, 2365, 3370, 3707, 4730, 6740, 7414, 9460, 14491, 14828, 18535, 28982, 37070, 57964, 72455, 74140, 144910, 159401, 289820, 318802, 637604, 797005, 1594010, 3188020]

約数ペア:

[(1, 3188020), (2, 1594010), (4, 797005), (5, 637604), (10, 318802), (11, 289820), (20, 159401), (22, 144910), (43, 74140), (44, 72455), (55, 57964), (86, 37070), (110, 28982), (172, 18535), (215, 14828), (220, 14491), (337, 9460), (430, 7414), (473, 6740), (674, 4730), (860, 3707), (946, 3370), (1348, 2365), (1685, 1892)]