65681360

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1613}}^1$

素因数の和:2135

約数の個数: 40

約数和(自身を含む): 153104040

約数和(自身を除く): 87422680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1613, 2036, 2545, 3226, 4072, 5090, 6452, 8065, 8144, 10180, 12904, 16130, 20360, 25808, 32260, 40720, 64520, 129040, 821017, 1642034, 3284068, 4105085, 6568136, 8210170, 13136272, 16420340, 32840680, 65681360]

約数ペア:

[(1, 65681360), (2, 32840680), (4, 16420340), (5, 13136272), (8, 8210170), (10, 6568136), (16, 4105085), (20, 3284068), (40, 1642034), (80, 821017), (509, 129040), (1018, 64520), (1613, 40720), (2036, 32260), (2545, 25808), (3226, 20360), (4072, 16130), (5090, 12904), (6452, 10180), (8065, 8144)]