21458000

素因数分解:

$2^4\times 5^3\times {\mathrm{10729}}^1$

素因数の和:10752

約数の個数: 40

約数和(自身を含む): 51890280

約数和(自身を除く): 30432280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10729, 21458, 42916, 53645, 85832, 107290, 171664, 214580, 268225, 429160, 536450, 858320, 1072900, 1341125, 2145800, 2682250, 4291600, 5364500, 10729000, 21458000]

約数ペア:

[(1, 21458000), (2, 10729000), (4, 5364500), (5, 4291600), (8, 2682250), (10, 2145800), (16, 1341125), (20, 1072900), (25, 858320), (40, 536450), (50, 429160), (80, 268225), (100, 214580), (125, 171664), (200, 107290), (250, 85832), (400, 53645), (500, 42916), (1000, 21458), (2000, 10729)]