19418800

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1129}}^1$

素因数の和:1190

約数の個数: 60

約数和(自身を含む): 47780920

約数和(自身を除く): 28362120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 1075, 1129, 1720, 2150, 2258, 3440, 4300, 4516, 5645, 8600, 9032, 11290, 17200, 18064, 22580, 28225, 45160, 48547, 56450, 90320, 97094, 112900, 194188, 225800, 242735, 388376, 451600, 485470, 776752, 970940, 1213675, 1941880, 2427350, 3883760, 4854700, 9709400, 19418800]

約数ペア:

[(1, 19418800), (2, 9709400), (4, 4854700), (5, 3883760), (8, 2427350), (10, 1941880), (16, 1213675), (20, 970940), (25, 776752), (40, 485470), (43, 451600), (50, 388376), (80, 242735), (86, 225800), (100, 194188), (172, 112900), (200, 97094), (215, 90320), (344, 56450), (400, 48547), (430, 45160), (688, 28225), (860, 22580), (1075, 18064), (1129, 17200), (1720, 11290), (2150, 9032), (2258, 8600), (3440, 5645), (4300, 4516)]