21039118

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{1201}}^1$

素因数の和:1683

約数の個数: 16

約数和(自身を含む): 33319440

約数和(自身を除く): 12280322

約数列:

[1, 2, 19, 38, 461, 922, 1201, 2402, 8759, 17518, 22819, 45638, 553661, 1107322, 10519559, 21039118]

約数ペア:

[(1, 21039118), (2, 10519559), (19, 1107322), (38, 553661), (461, 45638), (922, 22819), (1201, 17518), (2402, 8759)]