21080129811

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3037}}^1\times {\mathrm{4139}}^1$

素因数の和:7235

約数の個数: 32

約数和(自身を含む): 30990516480

約数和(自身を除く): 9910386669

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 3037, 4139, 9111, 12417, 39481, 53807, 118443, 130591, 161421, 177977, 391773, 533931, 1697683, 2313701, 5093049, 6941103, 12570143, 37710429, 163411859, 490235577, 540516149, 1621548447, 7026709937, 21080129811]

約数ペア:

[(1, 21080129811), (3, 7026709937), (13, 1621548447), (39, 540516149), (43, 490235577), (129, 163411859), (559, 37710429), (1677, 12570143), (3037, 6941103), (4139, 5093049), (9111, 2313701), (12417, 1697683), (39481, 533931), (53807, 391773), (118443, 177977), (130591, 161421)]