64498360

素因数分解:

$2^3\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{1291}}^1$

素因数の和:2551

約数の個数: 32

約数和(自身を含む): 145350000

約数和(自身を除く): 80851640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1249, 1291, 2498, 2582, 4996, 5164, 6245, 6455, 9992, 10328, 12490, 12910, 24980, 25820, 49960, 51640, 1612459, 3224918, 6449836, 8062295, 12899672, 16124590, 32249180, 64498360]

約数ペア:

[(1, 64498360), (2, 32249180), (4, 16124590), (5, 12899672), (8, 8062295), (10, 6449836), (20, 3224918), (40, 1612459), (1249, 51640), (1291, 49960), (2498, 25820), (2582, 24980), (4996, 12910), (5164, 12490), (6245, 10328), (6455, 9992)]