64451120

素因数分解:

$2^4\times 5^1\times {\mathrm{805639}}^1$

素因数の和:805652

約数の個数: 20

約数和(自身を含む): 149849040

約数和(自身を除く): 85397920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805639, 1611278, 3222556, 4028195, 6445112, 8056390, 12890224, 16112780, 32225560, 64451120]

約数ペア:

[(1, 64451120), (2, 32225560), (4, 16112780), (5, 12890224), (8, 8056390), (10, 6445112), (16, 4028195), (20, 3222556), (40, 1611278), (80, 805639)]