21876909

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{1709}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 31026240

約数和(自身を除く): 9149331

約数列:

[1, 3, 17, 51, 251, 753, 1709, 4267, 5127, 12801, 29053, 87159, 428959, 1286877, 7292303, 21876909]

約数ペア:

[(1, 21876909), (3, 7292303), (17, 1286877), (51, 428959), (251, 87159), (753, 29053), (1709, 12801), (4267, 5127)]