81451784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{1907}}^1$

素因数の和:2213

約数の個数: 32

約数和(自身を含む): 161416800

約数和(自身を除く): 79965016

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 281, 562, 1124, 1907, 2248, 3814, 5339, 7628, 10678, 15256, 21356, 36233, 42712, 72466, 144932, 289864, 535867, 1071734, 2143468, 4286936, 10181473, 20362946, 40725892, 81451784]

約数ペア:

[(1, 81451784), (2, 40725892), (4, 20362946), (8, 10181473), (19, 4286936), (38, 2143468), (76, 1071734), (152, 535867), (281, 289864), (562, 144932), (1124, 72466), (1907, 42712), (2248, 36233), (3814, 21356), (5339, 15256), (7628, 10678)]