257423908

素因数分解:

$2^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{70181}}^1$

素因数の和:70323

約数の個数: 24

約数和(自身を含む): 518785344

約数和(自身を除く): 261361436

約数列:

[1, 2, 4, 7, 14, 28, 131, 262, 524, 917, 1834, 3668, 70181, 140362, 280724, 491267, 982534, 1965068, 9193711, 18387422, 36774844, 64355977, 128711954, 257423908]

約数ペア:

[(1, 257423908), (2, 128711954), (4, 64355977), (7, 36774844), (14, 18387422), (28, 9193711), (131, 1965068), (262, 982534), (524, 491267), (917, 280724), (1834, 140362), (3668, 70181)]