64509680

素因数分解:

$2^4\times 5^1\times {\mathrm{806371}}^1$

素因数の和:806384

約数の個数: 20

約数和(自身を含む): 149985192

約数和(自身を除く): 85475512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 806371, 1612742, 3225484, 4031855, 6450968, 8063710, 12901936, 16127420, 32254840, 64509680]

約数ペア:

[(1, 64509680), (2, 32254840), (4, 16127420), (5, 12901936), (8, 8063710), (10, 6450968), (16, 4031855), (20, 3225484), (40, 1612742), (80, 806371)]