257510008

素因数分解:

$2^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{28211}}^1$

素因数の和:28387

約数の個数: 32

約数和(自身を含む): 555212160

約数和(自身を除く): 297702152

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 163, 326, 652, 1141, 1304, 2282, 4564, 9128, 28211, 56422, 112844, 197477, 225688, 394954, 789908, 1579816, 4598393, 9196786, 18393572, 32188751, 36787144, 64377502, 128755004, 257510008]

約数ペア:

[(1, 257510008), (2, 128755004), (4, 64377502), (7, 36787144), (8, 32188751), (14, 18393572), (28, 9196786), (56, 4598393), (163, 1579816), (326, 789908), (652, 394954), (1141, 225688), (1304, 197477), (2282, 112844), (4564, 56422), (9128, 28211)]