159680

素因数分解:

$2^6\times 5^1\times {\mathrm{499}}^1$

素因数の和:516

約数の個数: 28

約数和(自身を含む): 381000

約数和(自身を除く): 221320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 499, 998, 1996, 2495, 3992, 4990, 7984, 9980, 15968, 19960, 31936, 39920, 79840, 159680]

約数ペア:

[(1, 159680), (2, 79840), (4, 39920), (5, 31936), (8, 19960), (10, 15968), (16, 9980), (20, 7984), (32, 4990), (40, 3992), (64, 2495), (80, 1996), (160, 998), (320, 499)]