20836000

素因数分解:

$2^5\times 5^3\times {\mathrm{5209}}^1$

素因数の和:5234

約数の個数: 48

約数和(自身を含む): 51203880

約数和(自身を除く): 30367880

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, 5209, 10418, 20836, 26045, 41672, 52090, 83344, 104180, 130225, 166688, 208360, 260450, 416720, 520900, 651125, 833440, 1041800, 1302250, 2083600, 2604500, 4167200, 5209000, 10418000, 20836000]

約数ペア:

[(1, 20836000), (2, 10418000), (4, 5209000), (5, 4167200), (8, 2604500), (10, 2083600), (16, 1302250), (20, 1041800), (25, 833440), (32, 651125), (40, 520900), (50, 416720), (80, 260450), (100, 208360), (125, 166688), (160, 130225), (200, 104180), (250, 83344), (400, 52090), (500, 41672), (800, 26045), (1000, 20836), (2000, 10418), (4000, 5209)]