21278461

素因数分解:

${\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:336

約数の個数: 16

約数和(自身を含む): 23063040

約数和(自身を除く): 1784579

約数列:

[1, 19, 83, 103, 131, 1577, 1957, 2489, 8549, 10873, 13493, 162431, 206587, 256367, 1119919, 21278461]

約数ペア:

[(1, 21278461), (19, 1119919), (83, 256367), (103, 206587), (131, 162431), (1577, 13493), (1957, 10873), (2489, 8549)]