251205640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{897163}}^1$

素因数の和:897181

約数の個数: 32

約数和(自身を含む): 645958080

約数和(自身を除く): 394752440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 897163, 1794326, 3588652, 4485815, 6280141, 7177304, 8971630, 12560282, 17943260, 25120564, 31400705, 35886520, 50241128, 62801410, 125602820, 251205640]

約数ペア:

[(1, 251205640), (2, 125602820), (4, 62801410), (5, 50241128), (7, 35886520), (8, 31400705), (10, 25120564), (14, 17943260), (20, 12560282), (28, 8971630), (35, 7177304), (40, 6280141), (56, 4485815), (70, 3588652), (140, 1794326), (280, 897163)]