78408040

素因数分解:

$2^3\times 5^1\times {\mathrm{1960201}}^1$

素因数の和:1960212

約数の個数: 16

約数和(自身を含む): 176418180

約数和(自身を除く): 98010140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1960201, 3920402, 7840804, 9801005, 15681608, 19602010, 39204020, 78408040]

約数ペア:

[(1, 78408040), (2, 39204020), (4, 19602010), (5, 15681608), (8, 9801005), (10, 7840804), (20, 3920402), (40, 1960201)]