31379680

素因数分解:

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

素因数の和:4619

約数の個数: 48

約数和(自身を含む): 75875184

約数和(自身を除く): 44495504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3440, 4561, 6880, 9122, 18244, 22805, 36488, 45610, 72976, 91220, 145952, 182440, 196123, 364880, 392246, 729760, 784492, 980615, 1568984, 1961230, 3137968, 3922460, 6275936, 7844920, 15689840, 31379680]

約数ペア:

[(1, 31379680), (2, 15689840), (4, 7844920), (5, 6275936), (8, 3922460), (10, 3137968), (16, 1961230), (20, 1568984), (32, 980615), (40, 784492), (43, 729760), (80, 392246), (86, 364880), (160, 196123), (172, 182440), (215, 145952), (344, 91220), (430, 72976), (688, 45610), (860, 36488), (1376, 22805), (1720, 18244), (3440, 9122), (4561, 6880)]