2578280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1499}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 5940000

約数和(自身を除く): 3361720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1499, 1720, 2998, 5996, 7495, 11992, 14990, 29980, 59960, 64457, 128914, 257828, 322285, 515656, 644570, 1289140, 2578280]

約数ペア:

[(1, 2578280), (2, 1289140), (4, 644570), (5, 515656), (8, 322285), (10, 257828), (20, 128914), (40, 64457), (43, 59960), (86, 29980), (172, 14990), (215, 11992), (344, 7495), (430, 5996), (860, 2998), (1499, 1720)]