661570480

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{192317}}^1$

素因数の和:192373

約数の個数: 40

約数和(自身を含む): 1573930512

約数和(自身を除く): 912360032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 192317, 384634, 769268, 961585, 1538536, 1923170, 3077072, 3846340, 7692680, 8269631, 15385360, 16539262, 33078524, 41348155, 66157048, 82696310, 132314096, 165392620, 330785240, 661570480]

約数ペア:

[(1, 661570480), (2, 330785240), (4, 165392620), (5, 132314096), (8, 82696310), (10, 66157048), (16, 41348155), (20, 33078524), (40, 16539262), (43, 15385360), (80, 8269631), (86, 7692680), (172, 3846340), (215, 3077072), (344, 1923170), (430, 1538536), (688, 961585), (860, 769268), (1720, 384634), (3440, 192317)]