20745980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6607}}^1$

素因数の和:6773

約数の個数: 24

約数和(自身を含む): 43850688

約数和(自身を除く): 23104708

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6607, 13214, 26428, 33035, 66070, 132140, 1037299, 2074598, 4149196, 5186495, 10372990, 20745980]

約数ペア:

[(1, 20745980), (2, 10372990), (4, 5186495), (5, 4149196), (10, 2074598), (20, 1037299), (157, 132140), (314, 66070), (628, 33035), (785, 26428), (1570, 13214), (3140, 6607)]