139629640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{5281}}^1$

素因数の和:5953

約数の個数: 32

約数和(自身を含む): 314701560

約数和(自身を除く): 175071920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5281, 5288, 6610, 10562, 13220, 21124, 26405, 26440, 42248, 52810, 105620, 211240, 3490741, 6981482, 13962964, 17453705, 27925928, 34907410, 69814820, 139629640]

約数ペア:

[(1, 139629640), (2, 69814820), (4, 34907410), (5, 27925928), (8, 17453705), (10, 13962964), (20, 6981482), (40, 3490741), (661, 211240), (1322, 105620), (2644, 52810), (3305, 42248), (5281, 26440), (5288, 26405), (6610, 21124), (10562, 13220)]