25405040

素因数分解:

$2^4\times 5^1\times {\mathrm{317563}}^1$

素因数の和:317576

約数の個数: 20

約数和(自身を含む): 59066904

約数和(自身を除く): 33661864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317563, 635126, 1270252, 1587815, 2540504, 3175630, 5081008, 6351260, 12702520, 25405040]

約数ペア:

[(1, 25405040), (2, 12702520), (4, 6351260), (5, 5081008), (8, 3175630), (10, 2540504), (16, 1587815), (20, 1270252), (40, 635126), (80, 317563)]