20279180

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5147}}^1$

素因数の和:5353

約数の個数: 24

約数和(自身を含む): 42810768

約数和(自身を除く): 22531588

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5147, 10294, 20588, 25735, 51470, 102940, 1013959, 2027918, 4055836, 5069795, 10139590, 20279180]

約数ペア:

[(1, 20279180), (2, 10139590), (4, 5069795), (5, 4055836), (10, 2027918), (20, 1013959), (197, 102940), (394, 51470), (788, 25735), (985, 20588), (1970, 10294), (3940, 5147)]