81536140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{5443}}^1$

素因数の和:5566

約数の個数: 48

約数和(自身を含む): 197551872

約数和(自身を除く): 116015732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1498, 2140, 2996, 3745, 5443, 7490, 10886, 14980, 21772, 27215, 38101, 54430, 76202, 108860, 152404, 190505, 381010, 582401, 762020, 1164802, 2329604, 2912005, 4076807, 5824010, 8153614, 11648020, 16307228, 20384035, 40768070, 81536140]

約数ペア:

[(1, 81536140), (2, 40768070), (4, 20384035), (5, 16307228), (7, 11648020), (10, 8153614), (14, 5824010), (20, 4076807), (28, 2912005), (35, 2329604), (70, 1164802), (107, 762020), (140, 582401), (214, 381010), (428, 190505), (535, 152404), (749, 108860), (1070, 76202), (1498, 54430), (2140, 38101), (2996, 27215), (3745, 21772), (5443, 14980), (7490, 10886)]