71979992

素因数分解:

$2^3\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1999}}^1$

素因数の和:2655

約数の個数: 32

約数和(自身を含む): 154560000

約数和(自身を除く): 82580008

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 643, 1286, 1999, 2572, 3998, 4501, 5144, 7996, 9002, 13993, 15992, 18004, 27986, 36008, 55972, 111944, 1285357, 2570714, 5141428, 8997499, 10282856, 17994998, 35989996, 71979992]

約数ペア:

[(1, 71979992), (2, 35989996), (4, 17994998), (7, 10282856), (8, 8997499), (14, 5141428), (28, 2570714), (56, 1285357), (643, 111944), (1286, 55972), (1999, 36008), (2572, 27986), (3998, 18004), (4501, 15992), (5144, 13993), (7996, 9002)]