261566319

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1\times {\mathrm{499}}^1$

素因数の和:847

約数の個数: 32

約数和(自身を含む): 404800000

約数和(自身を除く): 143233681

約数列:

[1, 3, 7, 21, 109, 229, 327, 499, 687, 763, 1497, 1603, 2289, 3493, 4809, 10479, 24961, 54391, 74883, 114271, 163173, 174727, 342813, 380737, 524181, 799897, 1142211, 2399691, 12455539, 37366617, 87188773, 261566319]

約数ペア:

[(1, 261566319), (3, 87188773), (7, 37366617), (21, 12455539), (109, 2399691), (229, 1142211), (327, 799897), (499, 524181), (687, 380737), (763, 342813), (1497, 174727), (1603, 163173), (2289, 114271), (3493, 74883), (4809, 54391), (10479, 24961)]