2211920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:699

約数の個数: 40

約数和(自身を含む): 5270496

約数和(自身を除く): 3058576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 643, 688, 860, 1286, 1720, 2572, 3215, 3440, 5144, 6430, 10288, 12860, 25720, 27649, 51440, 55298, 110596, 138245, 221192, 276490, 442384, 552980, 1105960, 2211920]

約数ペア:

[(1, 2211920), (2, 1105960), (4, 552980), (5, 442384), (8, 276490), (10, 221192), (16, 138245), (20, 110596), (40, 55298), (43, 51440), (80, 27649), (86, 25720), (172, 12860), (215, 10288), (344, 6430), (430, 5144), (643, 3440), (688, 3215), (860, 2572), (1286, 1720)]