21871329

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{1913}}^1$

素因数の和:2056

約数の個数: 16

約数和(自身を含む): 30256512

約数和(自身を除く): 8385183

約数列:

[1, 3, 37, 103, 111, 309, 1913, 3811, 5739, 11433, 70781, 197039, 212343, 591117, 7290443, 21871329]

約数ペア:

[(1, 21871329), (3, 7290443), (37, 591117), (103, 212343), (111, 197039), (309, 70781), (1913, 11433), (3811, 5739)]