64427120

素因数分解:

$2^4\times 5^1\times {\mathrm{805339}}^1$

素因数の和:805352

約数の個数: 20

約数和(自身を含む): 149793240

約数和(自身を除く): 85366120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805339, 1610678, 3221356, 4026695, 6442712, 8053390, 12885424, 16106780, 32213560, 64427120]

約数ペア:

[(1, 64427120), (2, 32213560), (4, 16106780), (5, 12885424), (8, 8053390), (10, 6442712), (16, 4026695), (20, 3221356), (40, 1610678), (80, 805339)]