2149901960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1249943}}^1$

素因数の和:1249997

約数の個数: 32

約数和(自身を含む): 4949778240

約数和(自身を除く): 2799876280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1249943, 2499886, 4999772, 6249715, 9999544, 12499430, 24998860, 49997720, 53747549, 107495098, 214990196, 268737745, 429980392, 537475490, 1074950980, 2149901960]

約数ペア:

[(1, 2149901960), (2, 1074950980), (4, 537475490), (5, 429980392), (8, 268737745), (10, 214990196), (20, 107495098), (40, 53747549), (43, 49997720), (86, 24998860), (172, 12499430), (215, 9999544), (344, 6249715), (430, 4999772), (860, 2499886), (1720, 1249943)]