18916000

素因数分解:

$2^5\times 5^3\times {\mathrm{4729}}^1$

素因数の和:4754

約数の個数: 48

約数和(自身を含む): 46486440

約数和(自身を除く): 27570440

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, 4729, 9458, 18916, 23645, 37832, 47290, 75664, 94580, 118225, 151328, 189160, 236450, 378320, 472900, 591125, 756640, 945800, 1182250, 1891600, 2364500, 3783200, 4729000, 9458000, 18916000]

約数ペア:

[(1, 18916000), (2, 9458000), (4, 4729000), (5, 3783200), (8, 2364500), (10, 1891600), (16, 1182250), (20, 945800), (25, 756640), (32, 591125), (40, 472900), (50, 378320), (80, 236450), (100, 189160), (125, 151328), (160, 118225), (200, 94580), (250, 75664), (400, 47290), (500, 37832), (800, 23645), (1000, 18916), (2000, 9458), (4000, 4729)]