1279789910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257503}}^1$

素因数の和:257588

約数の個数: 32

約数和(自身を含む): 2669801472

約数和(自身を除く): 1390011562

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4970, 257503, 515006, 1287515, 1802521, 2575030, 3605042, 9012605, 18025210, 18282713, 36565426, 91413565, 127978991, 182827130, 255957982, 639894955, 1279789910]

約数ペア:

[(1, 1279789910), (2, 639894955), (5, 255957982), (7, 182827130), (10, 127978991), (14, 91413565), (35, 36565426), (70, 18282713), (71, 18025210), (142, 9012605), (355, 3605042), (497, 2575030), (710, 1802521), (994, 1287515), (2485, 515006), (4970, 257503)]