81908260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{1459}}^1$

素因数の和:1876

約数の個数: 48

約数和(自身を含む): 197205120

約数和(自身を除く): 115296860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 401, 802, 1459, 1604, 2005, 2807, 2918, 4010, 5614, 5836, 7295, 8020, 10213, 11228, 14035, 14590, 20426, 28070, 29180, 40852, 51065, 56140, 102130, 204260, 585059, 1170118, 2340236, 2925295, 4095413, 5850590, 8190826, 11701180, 16381652, 20477065, 40954130, 81908260]

約数ペア:

[(1, 81908260), (2, 40954130), (4, 20477065), (5, 16381652), (7, 11701180), (10, 8190826), (14, 5850590), (20, 4095413), (28, 2925295), (35, 2340236), (70, 1170118), (140, 585059), (401, 204260), (802, 102130), (1459, 56140), (1604, 51065), (2005, 40852), (2807, 29180), (2918, 28070), (4010, 20426), (5614, 14590), (5836, 14035), (7295, 11228), (8020, 10213)]