21018172

素因数分解:

$2^2\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1249}}^1$

素因数の和:1861

約数の個数: 24

約数和(自身を含む): 42140000

約数和(自身を除く): 21121828

約数列:

[1, 2, 4, 7, 14, 28, 601, 1202, 1249, 2404, 2498, 4207, 4996, 8414, 8743, 16828, 17486, 34972, 750649, 1501298, 3002596, 5254543, 10509086, 21018172]

約数ペア:

[(1, 21018172), (2, 10509086), (4, 5254543), (7, 3002596), (14, 1501298), (28, 750649), (601, 34972), (1202, 17486), (1249, 16828), (2404, 8743), (2498, 8414), (4207, 4996)]