19559840

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2843}}^1$

素因数の和:2901

約数の個数: 48

約数和(自身を含む): 47301408

約数和(自身を除く): 27741568

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, 2843, 3440, 5686, 6880, 11372, 14215, 22744, 28430, 45488, 56860, 90976, 113720, 122249, 227440, 244498, 454880, 488996, 611245, 977992, 1222490, 1955984, 2444980, 3911968, 4889960, 9779920, 19559840]

約数ペア:

[(1, 19559840), (2, 9779920), (4, 4889960), (5, 3911968), (8, 2444980), (10, 1955984), (16, 1222490), (20, 977992), (32, 611245), (40, 488996), (43, 454880), (80, 244498), (86, 227440), (160, 122249), (172, 113720), (215, 90976), (344, 56860), (430, 45488), (688, 28430), (860, 22744), (1376, 14215), (1720, 11372), (2843, 6880), (3440, 5686)]