21389402

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{24473}}^1$

素因数の和:24517

約数の個数: 16

約数和(自身を含む): 35242560

約数和(自身を除く): 13853158

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 24473, 48946, 464987, 562879, 929974, 1125758, 10694701, 21389402]

約数ペア:

[(1, 21389402), (2, 10694701), (19, 1125758), (23, 929974), (38, 562879), (46, 464987), (437, 48946), (874, 24473)]