243311240

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{31517}}^1$

素因数の和:31721

約数の個数: 32

約数和(自身を含む): 550304280

約数和(自身を除く): 306993040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 31517, 63034, 126068, 157585, 252136, 315170, 630340, 1260680, 6082781, 12165562, 24331124, 30413905, 48662248, 60827810, 121655620, 243311240]

約数ペア:

[(1, 243311240), (2, 121655620), (4, 60827810), (5, 48662248), (8, 30413905), (10, 24331124), (20, 12165562), (40, 6082781), (193, 1260680), (386, 630340), (772, 315170), (965, 252136), (1544, 157585), (1930, 126068), (3860, 63034), (7720, 31517)]