78990040

素因数分解:

$2^3\times 5^1\times {\mathrm{1974751}}^1$

素因数の和:1974762

約数の個数: 16

約数和(自身を含む): 177727680

約数和(自身を除く): 98737640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1974751, 3949502, 7899004, 9873755, 15798008, 19747510, 39495020, 78990040]

約数ペア:

[(1, 78990040), (2, 39495020), (4, 19747510), (5, 15798008), (8, 9873755), (10, 7899004), (20, 3949502), (40, 1974751)]