248214920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{144311}}^1$

素因数の和:144365

約数の個数: 32

約数和(自身を含む): 571475520

約数和(自身を除く): 323260600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 144311, 288622, 577244, 721555, 1154488, 1443110, 2886220, 5772440, 6205373, 12410746, 24821492, 31026865, 49642984, 62053730, 124107460, 248214920]

約数ペア:

[(1, 248214920), (2, 124107460), (4, 62053730), (5, 49642984), (8, 31026865), (10, 24821492), (20, 12410746), (40, 6205373), (43, 5772440), (86, 2886220), (172, 1443110), (215, 1154488), (344, 721555), (430, 577244), (860, 288622), (1720, 144311)]