21098991

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{1451}}^1$

素因数の和:1622

約数の個数: 16

約数和(自身を含む): 29132928

約数和(自身を除く): 8033937

約数列:

[1, 3, 37, 111, 131, 393, 1451, 4353, 4847, 14541, 53687, 161061, 190081, 570243, 7032997, 21098991]

約数ペア:

[(1, 21098991), (3, 7032997), (37, 570243), (111, 190081), (131, 161061), (393, 53687), (1451, 14541), (4353, 4847)]