21249772

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 37920960

約数和(自身を除く): 16671188

約数列:

[1, 2, 4, 107, 131, 214, 262, 379, 428, 524, 758, 1516, 14017, 28034, 40553, 49649, 56068, 81106, 99298, 162212, 198596, 5312443, 10624886, 21249772]

約数ペア:

[(1, 21249772), (2, 10624886), (4, 5312443), (107, 198596), (131, 162212), (214, 99298), (262, 81106), (379, 56068), (428, 49649), (524, 40553), (758, 28034), (1516, 14017)]