8405680

素因数分解:

$2^4\times 5^1\times {\mathrm{105071}}^1$

素因数の和:105084

約数の個数: 20

約数和(自身を含む): 19543392

約数和(自身を除く): 11137712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 105071, 210142, 420284, 525355, 840568, 1050710, 1681136, 2101420, 4202840, 8405680]

約数ペア:

[(1, 8405680), (2, 4202840), (4, 2101420), (5, 1681136), (8, 1050710), (10, 840568), (16, 525355), (20, 420284), (40, 210142), (80, 105071)]