256202380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{261431}}^1$

素因数の和:261454

約数の個数: 36

約数和(自身を含む): 625868208

約数和(自身を除く): 369665828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 261431, 522862, 1045724, 1307155, 1830017, 2614310, 3660034, 5228620, 7320068, 9150085, 12810119, 18300170, 25620238, 36600340, 51240476, 64050595, 128101190, 256202380]

約数ペア:

[(1, 256202380), (2, 128101190), (4, 64050595), (5, 51240476), (7, 36600340), (10, 25620238), (14, 18300170), (20, 12810119), (28, 9150085), (35, 7320068), (49, 5228620), (70, 3660034), (98, 2614310), (140, 1830017), (196, 1307155), (245, 1045724), (490, 522862), (980, 261431)]