1287209800

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{105509}}^1$

素因数の和:105586

約数の個数: 48

約数和(自身を含む): 3041853300

約数和(自身を除く): 1754643500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 1220, 1525, 2440, 3050, 6100, 12200, 105509, 211018, 422036, 527545, 844072, 1055090, 2110180, 2637725, 4220360, 5275450, 6436049, 10550900, 12872098, 21101800, 25744196, 32180245, 51488392, 64360490, 128720980, 160901225, 257441960, 321802450, 643604900, 1287209800]

約数ペア:

[(1, 1287209800), (2, 643604900), (4, 321802450), (5, 257441960), (8, 160901225), (10, 128720980), (20, 64360490), (25, 51488392), (40, 32180245), (50, 25744196), (61, 21101800), (100, 12872098), (122, 10550900), (200, 6436049), (244, 5275450), (305, 4220360), (488, 2637725), (610, 2110180), (1220, 1055090), (1525, 844072), (2440, 527545), (3050, 422036), (6100, 211018), (12200, 105509)]