79839680

素因数分解:

$2^6\times 5^1\times {\mathrm{249499}}^1$

素因数の和:249516

約数の個数: 28

約数和(自身を含む): 190119000

約数和(自身を除く): 110279320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 249499, 498998, 997996, 1247495, 1995992, 2494990, 3991984, 4989980, 7983968, 9979960, 15967936, 19959920, 39919840, 79839680]

約数ペア:

[(1, 79839680), (2, 39919840), (4, 19959920), (5, 15967936), (8, 9979960), (10, 7983968), (16, 4989980), (20, 3991984), (32, 2494990), (40, 1995992), (64, 1247495), (80, 997996), (160, 498998), (320, 249499)]