12891400

素因数分解:

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

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 30690000

約数和(自身を除く): 17798600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1499, 1720, 2150, 2998, 4300, 5996, 7495, 8600, 11992, 14990, 29980, 37475, 59960, 64457, 74950, 128914, 149900, 257828, 299800, 322285, 515656, 644570, 1289140, 1611425, 2578280, 3222850, 6445700, 12891400]

約数ペア:

[(1, 12891400), (2, 6445700), (4, 3222850), (5, 2578280), (8, 1611425), (10, 1289140), (20, 644570), (25, 515656), (40, 322285), (43, 299800), (50, 257828), (86, 149900), (100, 128914), (172, 74950), (200, 64457), (215, 59960), (344, 37475), (430, 29980), (860, 14990), (1075, 11992), (1499, 8600), (1720, 7495), (2150, 5996), (2998, 4300)]