138405988

素因数分解:

$2^2\times 7^3\times {\mathrm{281}}^1\times {\mathrm{359}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 284256000

約数和(自身を除く): 145850012

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 281, 343, 359, 562, 686, 718, 1124, 1372, 1436, 1967, 2513, 3934, 5026, 7868, 10052, 13769, 17591, 27538, 35182, 55076, 70364, 96383, 100879, 123137, 192766, 201758, 246274, 385532, 403516, 492548, 706153, 1412306, 2824612, 4943071, 9886142, 19772284, 34601497, 69202994, 138405988]

約数ペア:

[(1, 138405988), (2, 69202994), (4, 34601497), (7, 19772284), (14, 9886142), (28, 4943071), (49, 2824612), (98, 1412306), (196, 706153), (281, 492548), (343, 403516), (359, 385532), (562, 246274), (686, 201758), (718, 192766), (1124, 123137), (1372, 100879), (1436, 96383), (1967, 70364), (2513, 55076), (3934, 35182), (5026, 27538), (7868, 17591), (10052, 13769)]