25645040

素因数分解:

$2^4\times 5^1\times {\mathrm{320563}}^1$

素因数の和:320576

約数の個数: 20

約数和(自身を含む): 59624904

約数和(自身を除く): 33979864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 320563, 641126, 1282252, 1602815, 2564504, 3205630, 5129008, 6411260, 12822520, 25645040]

約数ペア:

[(1, 25645040), (2, 12822520), (4, 6411260), (5, 5129008), (8, 3205630), (10, 2564504), (16, 1602815), (20, 1282252), (40, 641126), (80, 320563)]