20311000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1069}}^1$

素因数の和:1109

約数の個数: 64

約数和(自身を含む): 50076000

約数和(自身を除く): 29765000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 1000, 1069, 1900, 2138, 2375, 3800, 4276, 4750, 5345, 8552, 9500, 10690, 19000, 20311, 21380, 26725, 40622, 42760, 53450, 81244, 101555, 106900, 133625, 162488, 203110, 213800, 267250, 406220, 507775, 534500, 812440, 1015550, 1069000, 2031100, 2538875, 4062200, 5077750, 10155500, 20311000]

約数ペア:

[(1, 20311000), (2, 10155500), (4, 5077750), (5, 4062200), (8, 2538875), (10, 2031100), (19, 1069000), (20, 1015550), (25, 812440), (38, 534500), (40, 507775), (50, 406220), (76, 267250), (95, 213800), (100, 203110), (125, 162488), (152, 133625), (190, 106900), (200, 101555), (250, 81244), (380, 53450), (475, 42760), (500, 40622), (760, 26725), (950, 21380), (1000, 20311), (1069, 19000), (1900, 10690), (2138, 9500), (2375, 8552), (3800, 5345), (4276, 4750)]