81900136

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{20113}}^1$

素因数の和:20628

約数の個数: 16

約数和(自身を含む): 153872100

約数和(自身を除く): 71971964

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 20113, 40226, 80452, 160904, 10237517, 20475034, 40950068, 81900136]

約数ペア:

[(1, 81900136), (2, 40950068), (4, 20475034), (8, 10237517), (509, 160904), (1018, 80452), (2036, 40226), (4072, 20113)]