21519806

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139739}}^1$

素因数の和:139759

約数の個数: 16

約数和(自身を含む): 40245120

約数和(自身を除く): 18725314

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 139739, 279478, 978173, 1537129, 1956346, 3074258, 10759903, 21519806]

約数ペア:

[(1, 21519806), (2, 10759903), (7, 3074258), (11, 1956346), (14, 1537129), (22, 978173), (77, 279478), (154, 139739)]