78985040

素因数分解:

$2^4\times 5^1\times {\mathrm{987313}}^1$

素因数の和:987326

約数の個数: 20

約数和(自身を含む): 183640404

約数和(自身を除く): 104655364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 987313, 1974626, 3949252, 4936565, 7898504, 9873130, 15797008, 19746260, 39492520, 78985040]

約数ペア:

[(1, 78985040), (2, 39492520), (4, 19746260), (5, 15797008), (8, 9873130), (10, 7898504), (16, 4936565), (20, 3949252), (40, 1974626), (80, 987313)]