12640220

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{9433}}^1$

素因数の和:9509

約数の個数: 24

約数和(自身を含む): 26943504

約数和(自身を除く): 14303284

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 9433, 18866, 37732, 47165, 94330, 188660, 632011, 1264022, 2528044, 3160055, 6320110, 12640220]

約数ペア:

[(1, 12640220), (2, 6320110), (4, 3160055), (5, 2528044), (10, 1264022), (20, 632011), (67, 188660), (134, 94330), (268, 47165), (335, 37732), (670, 18866), (1340, 9433)]