81436000

素因数分解:

$2^5\times 5^3\times {\mathrm{20359}}^1$

素因数の和:20384

約数の個数: 48

約数和(自身を含む): 200098080

約数和(自身を除く): 118662080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 20359, 40718, 81436, 101795, 162872, 203590, 325744, 407180, 508975, 651488, 814360, 1017950, 1628720, 2035900, 2544875, 3257440, 4071800, 5089750, 8143600, 10179500, 16287200, 20359000, 40718000, 81436000]

約数ペア:

[(1, 81436000), (2, 40718000), (4, 20359000), (5, 16287200), (8, 10179500), (10, 8143600), (16, 5089750), (20, 4071800), (25, 3257440), (32, 2544875), (40, 2035900), (50, 1628720), (80, 1017950), (100, 814360), (125, 651488), (160, 508975), (200, 407180), (250, 325744), (400, 203590), (500, 162872), (800, 101795), (1000, 81436), (2000, 40718), (4000, 20359)]