21018872

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16319}}^1$

素因数の和:16355

約数の個数: 32

約数和(自身を含む): 47001600

約数和(自身を除く): 25982728

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16319, 32638, 65276, 114233, 130552, 228466, 375337, 456932, 750674, 913864, 1501348, 2627359, 3002696, 5254718, 10509436, 21018872]

約数ペア:

[(1, 21018872), (2, 10509436), (4, 5254718), (7, 3002696), (8, 2627359), (14, 1501348), (23, 913864), (28, 750674), (46, 456932), (56, 375337), (92, 228466), (161, 130552), (184, 114233), (322, 65276), (644, 32638), (1288, 16319)]