78881680

素因数分解:

$2^4\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1201}}^1$

素因数の和:2035

約数の個数: 40

約数和(自身を含む): 183776184

約数和(自身を除く): 104894504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 821, 1201, 1642, 2402, 3284, 4105, 4804, 6005, 6568, 8210, 9608, 12010, 13136, 16420, 19216, 24020, 32840, 48040, 65680, 96080, 986021, 1972042, 3944084, 4930105, 7888168, 9860210, 15776336, 19720420, 39440840, 78881680]

約数ペア:

[(1, 78881680), (2, 39440840), (4, 19720420), (5, 15776336), (8, 9860210), (10, 7888168), (16, 4930105), (20, 3944084), (40, 1972042), (80, 986021), (821, 96080), (1201, 65680), (1642, 48040), (2402, 32840), (3284, 24020), (4105, 19216), (4804, 16420), (6005, 13136), (6568, 12010), (8210, 9608)]