6640401.00000000

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{74209}}^1$

素因数の和:74284

約数の個数: 20

約数和(自身を含む): 156434680

約数和(自身を除く): 76882632

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 74209, 148418, 296836, 593672, 1187344, 4972003, 9944006, 19888012, 39776024, 79552048]

約数ペア:

[(1, 79552048), (2, 39776024), (4, 19888012), (8, 9944006), (16, 4972003), (67, 1187344), (134, 593672), (268, 296836), (536, 148418), (1072, 74209)]