138879860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991999}}^1$

素因数の和:992015

約数の個数: 24

約数和(自身を含む): 333312000

約数和(自身を除く): 194432140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991999, 1983998, 3967996, 4959995, 6943993, 9919990, 13887986, 19839980, 27775972, 34719965, 69439930, 138879860]

約数ペア:

[(1, 138879860), (2, 69439930), (4, 34719965), (5, 27775972), (7, 19839980), (10, 13887986), (14, 9919990), (20, 6943993), (28, 4959995), (35, 3967996), (70, 1983998), (140, 991999)]