21280883

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:494

約数の個数: 16

約数和(自身を含む): 23774016

約数和(自身を除く): 2493133

約数列:

[1, 13, 37, 151, 293, 481, 1963, 3809, 5587, 10841, 44243, 72631, 140933, 575159, 1636991, 21280883]

約数ペア:

[(1, 21280883), (13, 1636991), (37, 575159), (151, 140933), (293, 72631), (481, 44243), (1963, 10841), (3809, 5587)]