31381756

素因数分解:

$2^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:371

約数の個数: 48

約数和(自身を含む): 65016000

約数和(自身を除く): 33634244

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 257, 343, 356, 514, 623, 686, 1028, 1246, 1372, 1799, 2492, 3598, 4361, 7196, 8722, 12593, 17444, 22873, 25186, 30527, 45746, 50372, 61054, 88151, 91492, 122108, 160111, 176302, 320222, 352604, 640444, 1120777, 2241554, 4483108, 7845439, 15690878, 31381756]

約数ペア:

[(1, 31381756), (2, 15690878), (4, 7845439), (7, 4483108), (14, 2241554), (28, 1120777), (49, 640444), (89, 352604), (98, 320222), (178, 176302), (196, 160111), (257, 122108), (343, 91492), (356, 88151), (514, 61054), (623, 50372), (686, 45746), (1028, 30527), (1246, 25186), (1372, 22873), (1799, 17444), (2492, 12593), (3598, 8722), (4361, 7196)]