138873140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991951}}^1$

素因数の和:991967

約数の個数: 24

約数和(自身を含む): 333295872

約数和(自身を除く): 194422732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991951, 1983902, 3967804, 4959755, 6943657, 9919510, 13887314, 19839020, 27774628, 34718285, 69436570, 138873140]

約数ペア:

[(1, 138873140), (2, 69436570), (4, 34718285), (5, 27774628), (7, 19839020), (10, 13887314), (14, 9919510), (20, 6943657), (28, 4959755), (35, 3967804), (70, 1983902), (140, 991951)]