138854380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991817}}^1$

素因数の和:991833

約数の個数: 24

約数和(自身を含む): 333250848

約数和(自身を除く): 194396468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991817, 1983634, 3967268, 4959085, 6942719, 9918170, 13885438, 19836340, 27770876, 34713595, 69427190, 138854380]

約数ペア:

[(1, 138854380), (2, 69427190), (4, 34713595), (5, 27770876), (7, 19836340), (10, 13885438), (14, 9918170), (20, 6942719), (28, 4959085), (35, 3967268), (70, 1983634), (140, 991817)]