1619500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 3669120

約数和(自身を除く): 2049620

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 79, 82, 100, 125, 158, 164, 205, 250, 316, 395, 410, 500, 790, 820, 1025, 1580, 1975, 2050, 3239, 3950, 4100, 5125, 6478, 7900, 9875, 10250, 12956, 16195, 19750, 20500, 32390, 39500, 64780, 80975, 161950, 323900, 404875, 809750, 1619500]

約数ペア:

[(1, 1619500), (2, 809750), (4, 404875), (5, 323900), (10, 161950), (20, 80975), (25, 64780), (41, 39500), (50, 32390), (79, 20500), (82, 19750), (100, 16195), (125, 12956), (158, 10250), (164, 9875), (205, 7900), (250, 6478), (316, 5125), (395, 4100), (410, 3950), (500, 3239), (790, 2050), (820, 1975), (1025, 1580)]