21788252641

素因数分解:

${\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1\times {\mathrm{761}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 23836579200

約数和(自身を除く): 2048326559

約数列:

[1, 19, 37, 139, 293, 703, 761, 2641, 5143, 5567, 10841, 14459, 28157, 40727, 97717, 105779, 205979, 222973, 534983, 773813, 1506899, 2009801, 3913823, 4236487, 8250001, 28631081, 30993247, 74362637, 156750019, 588871693, 1146750139, 21788252641]

約数ペア:

[(1, 21788252641), (19, 1146750139), (37, 588871693), (139, 156750019), (293, 74362637), (703, 30993247), (761, 28631081), (2641, 8250001), (5143, 4236487), (5567, 3913823), (10841, 2009801), (14459, 1506899), (28157, 773813), (40727, 534983), (97717, 222973), (105779, 205979)]