12639680

素因数分解:

$2^6\times 5^1\times {\mathrm{39499}}^1$

素因数の和:39516

約数の個数: 28

約数和(自身を含む): 30099000

約数和(自身を除く): 17459320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 39499, 78998, 157996, 197495, 315992, 394990, 631984, 789980, 1263968, 1579960, 2527936, 3159920, 6319840, 12639680]

約数ペア:

[(1, 12639680), (2, 6319840), (4, 3159920), (5, 2527936), (8, 1579960), (10, 1263968), (16, 789980), (20, 631984), (32, 394990), (40, 315992), (64, 197495), (80, 157996), (160, 78998), (320, 39499)]