15689840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4561}}^1$

素因数の和:4617

約数の個数: 40

約数和(自身を含む): 37335408

約数和(自身を除く): 21645568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 4561, 9122, 18244, 22805, 36488, 45610, 72976, 91220, 182440, 196123, 364880, 392246, 784492, 980615, 1568984, 1961230, 3137968, 3922460, 7844920, 15689840]

約数ペア:

[(1, 15689840), (2, 7844920), (4, 3922460), (5, 3137968), (8, 1961230), (10, 1568984), (16, 980615), (20, 784492), (40, 392246), (43, 364880), (80, 196123), (86, 182440), (172, 91220), (215, 72976), (344, 45610), (430, 36488), (688, 22805), (860, 18244), (1720, 9122), (3440, 4561)]