21067978

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1\times {\mathrm{809}}^1$

素因数の和:1289

約数の個数: 16

約数和(自身を含む): 32805000

約数和(自身を除く): 11737022

約数列:

[1, 2, 29, 58, 449, 809, 898, 1618, 13021, 23461, 26042, 46922, 363241, 726482, 10533989, 21067978]

約数ペア:

[(1, 21067978), (2, 10533989), (29, 726482), (58, 363241), (449, 46922), (809, 26042), (898, 23461), (1618, 13021)]