21010120558

素因数分解:

$2^1\times 7^1\times {\mathrm{1489}}^1\times {\mathrm{1007873}}^1$

素因数の和:1009371

約数の個数: 16

約数和(自身を含む): 36041574240

約数和(自身を除く): 15031453682

約数列:

[1, 2, 7, 14, 1489, 2978, 10423, 20846, 1007873, 2015746, 7055111, 14110222, 1500722897, 3001445794, 10505060279, 21010120558]

約数ペア:

[(1, 21010120558), (2, 10505060279), (7, 3001445794), (14, 1500722897), (1489, 14110222), (2978, 7055111), (10423, 2015746), (20846, 1007873)]