66989020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{478493}}^1$

素因数の和:478509

約数の個数: 24

約数和(自身を含む): 160773984

約数和(自身を除く): 93784964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 478493, 956986, 1913972, 2392465, 3349451, 4784930, 6698902, 9569860, 13397804, 16747255, 33494510, 66989020]

約数ペア:

[(1, 66989020), (2, 33494510), (4, 16747255), (5, 13397804), (7, 9569860), (10, 6698902), (14, 4784930), (20, 3349451), (28, 2392465), (35, 1913972), (70, 956986), (140, 478493)]