25785040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2957}}^1$

素因数の和:3079

約数の個数: 40

約数和(自身を含む): 60520680

約数和(自身を除く): 34735640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2957, 4360, 5914, 8720, 11828, 14785, 23656, 29570, 47312, 59140, 118280, 236560, 322313, 644626, 1289252, 1611565, 2578504, 3223130, 5157008, 6446260, 12892520, 25785040]

約数ペア:

[(1, 25785040), (2, 12892520), (4, 6446260), (5, 5157008), (8, 3223130), (10, 2578504), (16, 1611565), (20, 1289252), (40, 644626), (80, 322313), (109, 236560), (218, 118280), (436, 59140), (545, 47312), (872, 29570), (1090, 23656), (1744, 14785), (2180, 11828), (2957, 8720), (4360, 5914)]