21005877599

素因数分解:

$7^1\times {\mathrm{787}}^1\times {\mathrm{1009}}^1\times {\mathrm{3779}}^1$

素因数の和:5582

約数の個数: 16

約数和(自身を含む): 24067411200

約数和(自身を除く): 3061533601

約数列:

[1, 7, 787, 1009, 3779, 5509, 7063, 26453, 794083, 2974073, 3813011, 5558581, 20818511, 26691077, 3000839657, 21005877599]

約数ペア:

[(1, 21005877599), (7, 3000839657), (787, 26691077), (1009, 20818511), (3779, 5558581), (5509, 3813011), (7063, 2974073), (26453, 794083)]