251657980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{6397}}^1$

素因数の和:6694

約数の個数: 48

約数和(自身を含む): 606223296

約数和(自身を除く): 354565316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 1124, 1405, 1967, 2810, 3934, 5620, 6397, 7868, 9835, 12794, 19670, 25588, 31985, 39340, 44779, 63970, 89558, 127940, 179116, 223895, 447790, 895580, 1797557, 3595114, 7190228, 8987785, 12582899, 17975570, 25165798, 35951140, 50331596, 62914495, 125828990, 251657980]

約数ペア:

[(1, 251657980), (2, 125828990), (4, 62914495), (5, 50331596), (7, 35951140), (10, 25165798), (14, 17975570), (20, 12582899), (28, 8987785), (35, 7190228), (70, 3595114), (140, 1797557), (281, 895580), (562, 447790), (1124, 223895), (1405, 179116), (1967, 127940), (2810, 89558), (3934, 63970), (5620, 44779), (6397, 39340), (7868, 31985), (9835, 25588), (12794, 19670)]