21028713

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{761}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 28724352

約数和(自身を除く): 7695639

約数列:

[1, 3, 61, 151, 183, 453, 761, 2283, 9211, 27633, 46421, 114911, 139263, 344733, 7009571, 21028713]

約数ペア:

[(1, 21028713), (3, 7009571), (61, 344733), (151, 139263), (183, 114911), (453, 46421), (761, 27633), (2283, 9211)]