64725040

素因数分解:

$2^4\times 5^1\times {\mathrm{809063}}^1$

素因数の和:809076

約数の個数: 20

約数和(自身を含む): 150485904

約数和(自身を除く): 85760864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809063, 1618126, 3236252, 4045315, 6472504, 8090630, 12945008, 16181260, 32362520, 64725040]

約数ペア:

[(1, 64725040), (2, 32362520), (4, 16181260), (5, 12945008), (8, 8090630), (10, 6472504), (16, 4045315), (20, 3236252), (40, 1618126), (80, 809063)]