64424720

素因数分解:

$2^4\times 5^1\times {\mathrm{805309}}^1$

素因数の和:805322

約数の個数: 20

約数和(自身を含む): 149787660

約数和(自身を除く): 85362940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805309, 1610618, 3221236, 4026545, 6442472, 8053090, 12884944, 16106180, 32212360, 64424720]

約数ペア:

[(1, 64424720), (2, 32212360), (4, 16106180), (5, 12884944), (8, 8053090), (10, 6442472), (16, 4026545), (20, 3221236), (40, 1610618), (80, 805309)]