78925040

素因数分解:

$2^4\times 5^1\times {\mathrm{986563}}^1$

素因数の和:986576

約数の個数: 20

約数和(自身を含む): 183500904

約数和(自身を除く): 104575864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986563, 1973126, 3946252, 4932815, 7892504, 9865630, 15785008, 19731260, 39462520, 78925040]

約数ペア:

[(1, 78925040), (2, 39462520), (4, 19731260), (5, 15785008), (8, 9865630), (10, 7892504), (16, 4932815), (20, 3946252), (40, 1973126), (80, 986563)]