25728460

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3307}}^1$

素因数の和:3705

約数の個数: 24

約数和(自身を含む): 54185040

約数和(自身を除く): 28456580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3307, 3890, 6614, 7780, 13228, 16535, 33070, 66140, 1286423, 2572846, 5145692, 6432115, 12864230, 25728460]

約数ペア:

[(1, 25728460), (2, 12864230), (4, 6432115), (5, 5145692), (10, 2572846), (20, 1286423), (389, 66140), (778, 33070), (1556, 16535), (1945, 13228), (3307, 7780), (3890, 6614)]